M34502T-MCU
MCU Board for PC4504 Emulator System
User's Manual
Rev.2.00
July 1, 2004
REJ10J0273-0200Z
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Keep safety first in your circuit designs!
Notes regarding these materials
• This product is a development supporting unit for use in your program development and evaluation stages. In mass-producing your
program you have finished developing, be sure to make a judgment on your own risk that it can be put to practical use by performing
integration test, evaluation, or some experiment else.
• In no event shall Renesas Solutions Corporation be liable for any consequence arising from the use of this product.
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For inquiries about the contents of this document or product, fill in the text file the installer of the emulator debugger generates in the
following directory and email to your local distributor.
\SUPPORT\Product-name\SUPPORT.TXT
Renesas Tools Homepage http://www.renesas.com/en/tools
Precautions to be taken when using this product
( 2 / 38 )
Contents
Preface ....................................................................................................................................4
1. Precautions for Safety.........................................................................................................5
1.1 Safety Symbols and Meanings ..............................................................................5
2. Handling Precautions..........................................................................................................9
3. Contents of the Package ...................................................................................................11
3.1 Package Components of the M34502T-MCU.....................................................11
3.2 Other Necessary Products ...................................................................................11
4. M34502T-MCU................................................................................................................13
4.1 Outline.................................................................................................................13
4.2 Specifications ......................................................................................................14
4.3 Switches ..............................................................................................................15
4.4 Check Pins...........................................................................................................16
4.5 Connectors...........................................................................................................16
4.6 Connecting to the Target System ........................................................................19
4.7 LED .....................................................................................................................23
5. Precautions to Be Taken When Debugging......................................................................25
5.1 Reset ....................................................................................................................25
5.2 System Clock ......................................................................................................25
5.3 Real-time Capability of Timer ............................................................................25
5.4 Watchdog Timer..................................................................................................26
5.5 Port I/O Timing ...................................................................................................26
5.6 Port I/O Characteristics .......................................................................................27
5.7 Pullup Transistor .................................................................................................27
5.8 RAM Backup Mode ............................................................................................28
5.9 Program Execution (G, GB)................................................................................29
5.10 External Trigger Signal .....................................................................................31
5.11 Other Precautions ..............................................................................................31
6. Connection Circuit Diagram of the M34502T-MCU .......................................................33
7. External Dimensions of the Pitch Converter Board .........................................................35
7.1 M34501T-PTC ....................................................................................................35
Appendix A. How to Request for Repair .............................................................................36
( 3 / 38 )
Preface
This user's manual describes the specifications of the M34502T-MCU emulator board for Renesas
4501, 4502, 4506, 4507 and 4580 Groups of 4-bit single-chip MCUs. The M34502T-MCU is an
MCU board for the PC4504 system used by installing on the PC4504 emulator main unit. For
emulator main unit PC4504 and emulator debugger M3T-PD45, refer to each user's manual.
To use the product properly
Precautions for Safety
• In both this User's Manual and on the product itself, several icons are used to insure
proper handling of this product and also to prevent injuries to you or other persons,
or damage to your properties.
• The icons' graphic images and meanings are given in "Chapter 1. Precautions for
Safety". Be sure to read this chapter before using the product.
( 4 / 38 )
1. Precautions for Safety
In both the user's manual and on the product itself, several icons are used to insure proper handling
of this product and also to prevent injuries to you or other persons, or damage to your properties.
This chapter describes the precautions which should be taken in order to use this product safely and
properly. Be sure to read this chapter before using this product.
1.1 Safety Symbols and Meanings
WARNING
CAUTION
IMPORTANT
In addition to the three above, the following are also used as appropriate.
If the requirements shown in the "WARNING"
sentences are ignored, the equipment may
cause serious personal injury or death.
If the requirements shown in the "CAUTION"
sentences are ignored, the equipment may
malfunction.
It means important information on using this
product.
means WARNING or CAUTION.
Example: CAUTION AGAINST AN ELECTRIC SHOCK
means PROHIBITION.
Example: DISASSEMBLY PROHIBITED
means A FORCIBLE ACTION.
Example:
The following pages describe the symbols "WARNING", "CAUTION", and "IMPORTANT".
UNPLUG THE POWER CABLE FROM THE RECEPTACLE.
( 5 / 38 )
WARNING
Warning for Installation:
• Do not set this product in water or areas of high humidity. Spilling water or some other liquid into
the main unit can cause an unrepairable damage.
Warning for Use Environment:
• This equipment is to be used in an environment with a maximum ambient temperature of 35 °C. Care
should be taken that this temperature is not exceeded.
CAUTION
Cautions to Be Taken for This Product:
• Do not disassemble or modify this product. Disassembling or modifying this product can cause
damage.
• Use caution when handling the main unit. Be careful not to apply a mechanical shock.
• Do not pull the emulator by the probe (60-wire half-pitch cable or 26-wire normal-pitch cable).
•Do not use inch-size screws for this equipment. The screws used in this equipment are all ISO
(meter-size) type screws. When replacing screws, use same type screws as equipped before.
( 6 / 38 )
IMPORTANT
Notes on Differences between an Actual MCU and the Emulator:
• Emulator operation differs from emulation of a mask MCU, as listed below. For details refer
to "5. Precautions to Be Taken When Debugging".
(1) Reset condition
(2) Initial values of internal resource data at power-on
(3) Internal ROM and RAM capacities, etc.
(4) Electrical characteristics
(5) Operation in the RAM backup mode
(6) Operation of the watchdog timer function
(7) Port I/O Timing
• Therefore, always be sure to evaluate your system with an evaluation MCU (OTP version). Also,
be sure to perform board-mounted evaluation with an ES (Engineering Sample) version MCU to
make final confirmation of device operation before starting mask production.
Note on the Target System:
• Make sure that the target's supply voltage specification is +3.0 V or +5.0 V. Therefore the target's
supply voltage should be in the range of +3.0 V ±10% or +5.0 V ±10%.
Notes on Connecting the Target System:
• When connecting the emulator probe, be careful to the wrong connection.
•When connecting the emulator probe, be careful to a warp of the cable. The warp may cause
breaking the wire.
( 7 / 38 )
MEMO
( 8 / 38 )
2. Handling Precautions
When using the M34502T-MCU board, pay attention to the following:
(1) About the emulator
To use the M34502T-MCU board, install it on the PC4504 emulator main unit.
(2) About the MCU board installation
Before installing (and removing) the MCU board, always be sure to power off the PC4504
emulator main unit and unplug its power cord from the outlet. For details on how to install and
remove the MCU board, see "Chapter 2. Setup" in the PC4504 System User's Manual.
(3) Emulator debugger (M3T-PD45)
When using the M34502T-MCU board to debug your program, you need emulator debugger
M3T-PD45 (sold separately). Be sure to use the data file for 4501, 4502 or 4580 Group included
with emulator debugger M3T-PD45.
(4) Registers that can be operated from M3T-PD45
Tables 2.1 and 2.2 list the registers that can be operated from M3T-PD45.
Table 2.1 Registers that can be operated for 4501, 4502, 4506 and 4507 Group MCUs
Register Reference Modification Reg ister Reference Modification
PC Yes Yes W1 Yes Yes
CY Yes Yes W2 Yes Yes
A Yes Yes W6 Yes Yes
B Yes Yes Q1 Yes Yes
X Yes Yes K0 Yes Yes
Y Yes Yes K1 Yes Yes
Z Yes Yes K2 Yes Yes
D Yes Yes PU0 - Yes
E Yes Yes PU1 - Yes
SP Yes - PU2 - Yes
V1 Yes Yes MR Yes Yes
V2 Yes Yes R1 - Yes
I1 Yes Yes R2 - Yes
( 9 / 38 )
Table 2.2 Registers that can be operated for 4580 Group MCUs
Register Reference Modification Re gister Reference Modification
PC Yes Yes W2 Yes Yes
CY Yes Yes W6 Yes Yes
A Yes Yes Q3 Yes Yes
B Yes Yes Q4 Yes Yes
X Yes Yes K0 Yes Yes
Y Yes Yes K1 Yes Yes
Z Yes Yes K2 Yes Yes
D Yes Yes PU0 - Yes
E Yes Yes PU1 - Yes
SP Yes - PU2 - Yes
V1 Yes Yes MR Yes Yes
V2 Yes Yes R1 - Yes
I1 Yes Yes R2 - Yes
W1 Yes Yes
( 10 / 38 )
3. Contents of the Package
3.1 Package Components of the M34502T-MCU
Table 3.1 shows the contents of the M34502T-MCU package. When unpacking your M34502TMCU package, check to see that all of these components are included.
Table 3.1 Contents of the M34502T-MCU
Item
Product name
Quantity
1
2
3
4
5
6
7
8
M34502T-MCU
60-wire half-pitch cable (40 cm)
26-wire normal-pitch cable (10 cm)
2-wire cable for external trigger signal (50 cm)
PCA4029 pitch converter board
OSC-2 oscillator circuit board (J1 connector mounted)
M34501T-PTC pitch converter board
M34502T-MCU user's manual (this manual)
*1 The M34502T-MCU has an oscillator circuit board OSC-2 (for 4.19 MHz) that is incorporated
when shipped from the factory. In addition, it comes with an oscillator circuit board OSC-2, with
only a connector J1 mounted.
*2 Keep the packaging carton and cushion material of the M34502T-MCU to transport it for repair
or for other purposes in the future.
*3 If you find any item missing or faulty, or any suggestion, contact your local distributor.
3.2 Other Necessary Products
1
1
1
1
1
1
1
1
To bring forward programs development on the 4501, 4502, 4506, 4507 and 4580 Group of 4-bit
MCUs, the products given below are necessary in addition to those contained in the package above.
Get them separately to be ready when necessary.
(1) Emulator main unit: PC4504
(2) Emulator debugger: M3T-PD45
(3) Programming adapter: MS4238-20F
(for serial programming 4501, 4506 and 4580 Group MCUs)
MS4502-24F
(for serial programming 4502 and 4507 Group MCUs)
(4) Serial programmer: MSP-II or EFP-I
The programming adapters and the serial programmers listed above are products of Suisei Electronics
System Co., Ltd. For details on products, contact Suisei Electronics System Co., Ltd.
http://www.suisei.co.jp/index_e.htm
( 11 / 38 )
MEMO
( 12 / 38 )
4. M34502T-MCU
4.1 Outline
By using with the PC4504 emulator main unit, the M34502T-MCU can make up an emulator system
which can be operated by a personal computer. Figure 4.1 shows the development support system
configuration for 4502 and 4507 Group MCUs. And Figure 4.2 shows the development support
system configuration for 4501, 4506 and 4580 Groups.
Figure 4.1 Development support system configuration for 4502 and 4507 Group MCUs
Figure 4.2 Development support system configuration for 4501, 4506 and 4580 Group MCUs
*1 Use the M34501T-PTC pitch converter board for 20SDIP.
For details on the connections above, see "4.6 Connecting to the Target System" (page 19).
( 13 / 38 )
4.2 Specifications
Table 4.1 lists specifications of the M34502T-MCU.
Table 4.1 M34502T-MCU specifications
Applicable MCUs
Evaluation MCU
Maximum operating
clock frequency
Target system voltage
Power supply
4501 Group
4502 Group
4506 Group
4507 Group
4580 Group
M34502E4FP (mounted)
System clock: 4.19 MHz (with OSC-2 for 4.19 MHz)*
Default mode
3 V
5 V
3 V or 5 V
Supplied by the PC4504's internal power supply (+5 V, +12 V)
Low-speed mode
Medium-speed mode
High-speed mode
Default mode
Low-speed mode
Medium-speed mode
High-speed mode
4.4 MHz
3.0 MHz
1.5 MHz
4.4 MHz
1
Port emulation
Board dimensions
Operating temperature
Product configuration
Port
D0 - D5
P00 - P03
P10 - P13
P20, P21
233 (D) x 135 (W) x 1.6 (H) mm
5 to 35°C (no dew)
• M34502T-MCU
• 60-wire half-pitch cable
• 26-wire normal-pitch cable
• External trigger cable
• PCA4029
• OSC-2 (for changing frequencies)
• M34501T-PTC
N-channel
open drain
-
Direction
Input/output
Input/output
Input/output
Input/output
Device usedOutput type
Input: 74HC4050
Output: 74LS06
Input/output: 74HC4066
*1 The M34502T-MCU has an oscillator circuit board OSC-2 (for 4.19 MHz) that is incorporated
when shipped from the factory. In addition, it comes with an oscillator circuit board OSC-2, with
only a connector J1 mounted.
And the M34502T-MCU operates in the default mode (instruction-clock: f (XIN)/8) immediately
after a RESET is released.
( 14 / 38 )
4.3 Switches
Figure 4.3 shows the positions of switches of the M34502T-MCU. Table 4.2 lists the functions of the
switches and their factory-settings.
Figure 4.3 Positions of switches
Table 4.2 Functions of switches
Label Setting Description Factory-settingSwitch
ON
OFF
SW1
SW2
SW3
ON
ROMSIZE
5 V
3 V
OFF
ON
OFF
5 V
3 V
5 V
Does not output the VDD of the M34502TMCU to the target system.
Outputs the V
the target system.
Set the MCU’s ROM size.
• Set "2" for M2
• Set "4" for M4
Operates the evaluation MCU on the
M34502T-MCU at +5 V.
Operates the evaluation MCU on the
M34502T-MCU at +3 V.
DD of the M34502T-MCU to
OFF
Set to "4"
5 V
SW4
501/502
580
3 V
501/502
580
501/502
580
The M34502T-MCU operates for 4501,
4502, 4506 and 4507 Groups.
The M34502T-MCU operates for 4580
Group.
( 15 / 38 )
501/502
4.4 Check Pins
The M34502T-MCU has check pins listed in Table 4.3.
Table 4.3 Check pins
4.5 Connectors
Pins
VDD
GND
XIN
RUN/STOP
WRST
Outputs 3 V or 5 V by MCU voltage according to the setting of SW3.
Ground
Outputs an instruction clock (depending on the operating mode) of the MCU.
"L" when running user program, "H" when stopping execution.
"H" when decoding WRST instruction, possible to monitor the clear cycle of the
watchdog timer flag by a waveform.
Function
Table 4.4 lists the functions of the connectors, and Figure 4.4 shows the positions of connectors.
Table 4.4 Connectors
Connector
J1
J2
J3
Connects the evaluation MCU bus.
Connects the monitor CPU bus.
Connects the target system (60-pin).
Function
J4
J6
Connects the external trigger signal (2-pin).
Connects the oscillator circuit board (4-pin).
Figure 4.4 Positions of the connectors
( 16 / 38 )
(1) Connector J3
Table 4.5 lists the pin assignments of the 60-wire half-pitch connector (J3) for connecting the
PCA4029. And Figure 4.5 shows the connector J3 pin layout.
Table 4.5 Pin assignments of the 60-wire half-pitch connector (J3) for connecting the PCA4029
Line B Line C Line D
Signal
1
2
3
4
5
6
7
8
9
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Pin No.
I/O I/O I/O
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
Signal
DD
EV
VSS
XIN
XOUT
CNVSS
ERESET
1/AIN1
EP2
EP20/AIN0
ED5
ED4
ED3
ED2
NC
NC
NC
O
-
-
-
I
I/O
I/O
I/O
I/O
I/O
I/O
-
-
-
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Signal
0/AIN2
P3
P31/AIN3
EP00
EP01
EP02
EP03
EP10
EP11
EP12/CNTR
3/INT
EP1
0
ED
ED1
NC
NC
NC
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Line A
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Pin No.
I/OSignal
10
11
12
13
14
15
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
-
-
In the I/O column "I" denotes "Input"; "O" denotes "Output"; "I/O" denotes "Input/output"; "-"
denotes "Not connected".
Figure 4.5 Connector J3 pin layout
( 17 / 38 )
(2) Connector J4
For the connector J4 for the external trigger signal, use the 2-wire external trigger signal cable
included with your M34502T-MCU. Connect the black clip of the external trigger cable to GND,
and use the white clip for an external trigger signal input. Use the external trigger signal as an
external trigger break or an event input of the trace point by the external trigger. Table 4.6 lists
the pin assignments of the connector J4.
Table 4.6 Pin assignments of the connector J4
Pin No.
1
2
Signal
TRIG
GND
Function
External trigger signal input
GND
(3) Connector J6
The connector J6 is a connector used to connect an oscillator circuit board OSC-2. Table 4.7 lists
the pin assignments of the connector J6. Figure 4.6 shows the pin layout of the connector J6. For
the 4.19MHz operation with the oscillator circuit board OSC-2, see Figure 4.7.
Table 4.7 Pin assignments of the connector J6
Pin No.
1
2
3
4
Signal
VCC
GND
CLK
GND
Function
Power supply
GND
Clock input
GND
Figure 4.6 Pin layout of the connector J6
Figure 4.7 Circuit diagram of oscillator circuit board OSC-2 (4.19 MHz)
( 18 / 38 )
4.6 Connecting to the Target System
(1) For 4502 and 4507 Groups
How to connect the M34502T-MCU to the target system when using for 4502 and 4507 Groups
is shown below.
Make note of the fact that it is not possible to connect the M34502T-MCU directly to the foot
pattern of the MCU package (24P2Q-A).
a. Connecting to 2.54-mm-pitch Dual-in-line Pins on the Target System
Use the 26-wire normal-pitch cable (included) to connect the 26-pin dual-in-line pins on the
target system. The following products are required for connection to the target system.
• 60-wire half-pitch cable (40 cm)
• Pitch converter board PCA4029
• 26-wire normal-pitch cable (10 cm)
Figure 4.8 shows the M34502T-MCU board connected to the target system using the 26-wire
normal-pitch cable. Table 4.8 lists the connector signal assignments of the 26-wire normal-pitch
cable. And Figure 4.9 shows the pin layout of the 26-wire normal-pitch cable.
Figure 4.8 Connection to the target system using dual-in-line pins
( 19 / 38 )
Table 4.8 26-wire normal-pitch cable pin assignments
1
10
11
12
13
1
2
3
4
5
6
7
8
9
EVDD*
VSS
NC (XIN*2)
OUT)
NC (X
NC (CNV
ERESET
1/AIN1
EP2
EP20/AIN0
ED5
ED4
ED3
ED2
NC
SS)
26
25
24
23
22
21
20
19
18
17
16
15
14
0/AIN2
P3
P31/AIN3
EP00
EP01
EP02
EP03
EP10
EP11
EP12/CNTR
EP13/INT
0
ED
ED1
NC
*1 EVDD does not input the power supply from the target system, but outputs it to the target system
from the power circuit on the M34502T-MCU.
*2 XIN is input from oscillator circuit board OSC-2 on the M34502T-MCU and cannot be input from
the oscillator circuit on the target system.
Figure 4.9 Pin layout of the 26-wire normal-pitch cable
( 20 / 38 )
(2) For 4501, 4506 and 4580 Groups
How to connect the M34502T-MCU to the target system when using for 4501, 4506 and 4580
Groups is shown below.
Make note of the fact that it is not possible to connect the M34502T-MCU directly to the foot
pattern of the MCU package (20P2N-A).
a. Connecting to the IC Socket for 20-pin SDIP on the Target System
Attach the 26-wire normal-pitch cable (included) to pitch converter board M34501T-PTC to
connect the M34501T-MCU board with the IC socket for 20-pin SDIP on the target system.
Figure 4.10 shows the connection to the target system using the M34501T-PTC. And Figure
4.11 shows the pin assignments of the M34501T-PTC. The following products are required for
connection to the target system.
• 60-wire half-pitch cable (40 cm)
• Pitch converter board PCA4029
• 26-wire normal-pitch cable (10 cm)
• Pitch converter board M34501T-PTC
Table 4.9 lists the connector signal assignments of pitch converter board M34501T-PTC. The
pin assignments of the M34501T-PTC is the same as for the 20SDIP of the 4501 and 4506
Groups. When connecting pitch converter board M34501T-PTC, check the No. 1 pin positions
of the cable and the connector.
To avoid damage to the emulator and target system, be careful of the connection.
Figure 4.10 Connecting to an IC socket for 20-pin SDIP
( 21 / 38 )
Table 4.9 M34501T-PTC pin assignments
M34501T-PTC J2
1
10
1
2
3
4
5
6
7
8
9
EVDD*
VSS
NC (XIN*2)
OUT)
NC (X
NC (CNV
ERESET
1/AIN1
EP2
EP20/AIN0
ED3
ED2
SS)
20
19
18
17
16
15
14
13
12
11
EP12/CNTR
0
EP0
EP01
EP02
EP03
EP10
EP11
EP13/INT
0
ED
ED1
*1 EVDD does not input the power supply from the target system, but outputs it to the target system
from the power circuit on the M34502T-MCU.
*2 XIN is input from oscillator circuit board OSC-2 on the M34502T-MCU and cannot be input from
the oscillator circuit on the target system.
Figure 4.11 Pin layout of the M34501T-PTC
( 22 / 38 )
Some signals connected to the target system are emulated on the M34502T-MCU. For details, see
"6. Connection Circuit Diagram of the M34502T-MCU".
(1) Pins connected directly to the target system (2 types, 3 lines)
•P30, P31*
1
•VSS
(2) Pins connected to the target system via emulation circuits and other devices. (6 types, 18 lines)
•P00 to P03
•P10 to P13
•P20, P21
•D0 to D5*
2
• RESET
•EVDD*
3
(3) Pins not connected to the target system (3 types, 3 lines)
4
•XIN*
•XOUT
• CNVSS
*1 For 4501, 4506 and 4580 Group MCUs, the ports P30 and P31 are not connected to the target
system when the M34501T-PTC is mounted.
*2 For 4501, 4506 and 4580 Group MCUs, the ports D4 and D5 are not connected to the target system
when the M34501T-PTC is mounted.
*3 EVDD does not input the power supply from the target system, but outputs it to the target system
from the power circuit on the M34502T-MCU. The output (ON/OFF) and the power supply (3
V/5 V) of EVDD are changed by the switches SW1 and SW3 respectively.
*4 XIN is input from oscillator circuit board OSC-2 on the M34502T-MCU and cannot be input from
the oscillator circuit on the target system. To change the frequency of the system clock, use
oscillator circuit board OSC-2 (included) with other necessary parts mounted.
4.7 LED
Figure 4.12 shows the LED layout of the M34502T-MCU. The LED lights in green when the power
is supplied.
Figure 4.12 Layout of the LED
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MEMO
( 24 / 38 )
5. Precautions to Be Taken When Debugging
5.1 Reset
The M34502T-MCU uses a 74AC14 for its RESET signal input buffer, so that its electrical
characteristics differ from those of an actual MCU. Table 5.1 lists the RESET signal input
characteristics of the M34502T-MCU.
Table 5.1 RESET signal input characteristics
H-level threshold voltage
L-level threshold voltage
5.2 System Clock
Depending on the supply voltage and operation modes, use one of the frequencies listed in Table 5.2.
Table 5.2 Operating frequencies of M34502T-MCU
Item Symbol
Hysteresis voltage
Voltage
3 V
5 V
Medium-speed
Medium-speed
Mode
Default
Low-speed
High-speed
Default
Low-speed
High-speed
P
V
VN
VH
4.4 MHz or less
3.0 MHz or less
1.5 MHz or less
4.4 MHz or less
Voltage (VCC)
3.0 V
4.5 V
5.5 V
3.0 V
4.5 V
5.5 V
3.0 V
4.5 V
5.5 V
Frequency
Min.
-
-
-
0.5 V
0.9 V
1.1 V
0.3 V
0.4 V
0.5 V
Max.
2.2 V
3.2 V
3.9 V
-
-
-
1.2 V
1.4 V
1.6 V
To change this clock frequency to suit that of the target system, attach the necessary parts to oscillator
circuit board OSC-2 (included).
For details about the oscillation circuit constant, consult your oscillator manufacturer.
5.3 Real-time Capability of Timer
The PC4504 and M34502T-MCU have their internal clock operating even during emulation, so that
the timer values keep changing.
Example: (1) When single-stepping the program
(2) When registers or internal RAM are referenced or modified
( 25 / 38 )
5.4 Watchdog Timer
The M34502T-MCU does not have an operational watchdog timer. Therefore, use an evaluation
MCU (OTP version) to verify the operation associated with a watchdog timer.
The M34502T-MCU outputs a signal whose waveform is shown below from the check pin TP5
during WRST instruction execution cycles. This signal allows you to check the initialization cycle
of a watchdog timer.
Figure 5.1 Waveform output from check pin TP5
5.5 Port I/O Timing
System clock
X
IN
WRST
WRST instruction Next instruction
(1) Port input timing
Port input timings are the same as with each actual MCU.
(2) Port output timing
The output timings of the following ports are different from those of actual MCUs because of the
emulation circuits configured with the ports of the M34502T-MCU.
• Ports D0 to D5
• Ports P00 to P03
• Ports P10 to P13
With actual MCUs, the changes occur at the beginning of the T3 state of an output instruction,
while with the M34502T-MCU, the changes occur at the beginning of the T2 state of the next
output instruction. Figure 5.2 shows the port output timings of actual MCUs and the M34502TMCU. For the other ports, the output timings are the same as those of actual MCUs.
Next output instructionOutput instruction
System clock
X
IN
P0, P1, D port
output timings
on actual MCUs
P0, P1, D port
output timings of
M34502T-MCU
Figure 5.2 D, P0 and P1 port output timings
( 26 / 38 )
5.6 Port I/O Characteristics
With the M34502T-MCU, port I/O characteristics are different from those of actual MCUs because
there is an emulation circuit in ports P0, P1, P2 and D0 to D5. Table 5.3 lists port I/O characteristics
of the M34502T-MCU.
Table 5.3 Emulation port I/O characteristics
Port
Input 74HC4050
P0, P1
Output
Input/
output
Input
Output
D
P2
5 - D0
Device Item Voltage (VCC)
V
VIL
IH
2.0 V
4.5 V
2.0 V
4.5 V
IOH
74LS06
IOL
4.75 V
VOL
2.0 V
RON
4.5 V
74HC4066
RON
VIH
74HC4050
VIL
4.5 V
2.0 V
4.5 V
2.0 V
4.5 V
IOH
74LS06
IOL
4.75 V
VOL
Min.
1.5 V
3.15 V
-
-
-
-
-
-
160 Ω
70 Ω
96 Ω
10 Ω
1.5 V
3.15 V
-
-
-
-
-
-
Max.
-
-
0.5 V
1.35 V
250 µA
40 mA
0.4 V
0.7 V
-
130 Ω
200 Ω
-
-
-
0.5 V
1.35 V
250 µA
40 mA
0.4 V
0.7 V
Remarks
OH = MAX
V
OL = 16 mA
I
IOL = MAX
VI/O = VCC to GND
II/O ≤ 1 mA
I/O = V CC or GND
V
II/O ≤ 1 mA
VI/O = VCC to GND
II/O ≤ 1 mA
V
OH = MAX
IOL = 16 mA
IOL = MAX
5.7 Pullup Transistor
Since ports P0, P1, D2 and D3 contain emulation circuits, the pullup transistor in an MCU cannot be used.
For the M34502T-MCU, the pullup resistor of 51 kΩ is mounted. When it is necessary to change the
pullup resistor, replace the resistance arrays of R3 and R4.
( 27 / 38 )
5.8 RAM Backup Mode
In the RAM backup mode, the M34502T-MCU operates differently from actual MCUs.
(1) On Port Output (Ports D, P0 and P1) in the RAM Backup Mode
With an actual MCU, the state of ports immediately before the RAM backup mode is retained,
while with the M34502T-MCU, it is not retained. (a restriction of the M34502T-MCU)
With the M34502T-MCU, in the RAM backup mode, ports D, P0 and P1 are held HIGH, and when
returned from the RAM backup mode they retain their previous state.
Therefore, to evaluate a system which needs ports D, P0 and P1 to be held LOW in the RAM
backup mode, you need an evaluation MCU (OTP version).
(2) RAM Operation of the M34502T-MCU
Though the actual chip is placed in the RAM backup mode by executing a combination of "EPOF"
and "POF" or "POF2" instructions, the M34502T-MCU is placed in the RAM backup mode by
only either "POF" instruction or "POF2" instruction.
In the M34502T-MCU, the "EPOF" instruction does not have any effect.
Program example 5.1
RC
INY
EPOF
POF
•
•
Program example 5.2
RC
INY
POF
•
•
•
Actual MCU
The RAM backup mode works.
M34502T-MCU
The RAM backup mode works.
Actual MCU
The RAM backup mode does NOT work.
M34502T-MCU
The RAM backup mode works.
( 28 / 38 )
5.9 Program Execution (G, GB)
According to the specifications of the PC4504 and M34502T-MCU, there are following restrictions
concerned to the operation of the program execution commands (G and GB commands).
(1) Continuous description of instructions
Hardware breakpoints set in a continuous description of instructions do not cause a break to occur
in the continuous description of instructions. A break occurs only after fetching the address where
the continuous description of instructions is discontinued. (See Program example 5.3)
However, a break does occur even in a continuous description of instructions when an external
trigger break or forced break is encountered. For execution to be resumed in this case, you need
to make sure that the execution start address is next to the continuous description of instructions.
(See Program example 5.4)
Program example 5.3
POINT: LA 1 ; Continuous description of instructions
POINT+2: XAM 3
If a break is set at POINT, execution is halted immediately before the XAM instruction at
address POINT+2.
LA 0
LA 2
Program example 5.4
LA 0
POINT: LA 1 ; Continuous description of instructions
POINT+1: LA 2
POINT+2: XAM 3
If a forced or external trigger break is applied at POINT, execution is halted at POINT +1.
When resuming program execution after the break, make sure that the start address is at
POINT+2, an address immediately after the continuous description of instructions is
discontinued.
( 29 / 38 )
(2) Skip instructions (e.g. SNZP, INY, DEY, SZB, SEAM, SZC and RTS instructions)
When a skip instruction skips the next instruction, a breakpoint set in the skipped instruction does
not break. (See Program examples 5.5 and 5.6)
Program example 5.5
RC SC
SZC SZC
POINT: TABP POINT: TABP
POINTA: TAM 0 POINTA: TAM 0
• •
• •
A breakpoint set at address POINT causes execution to halt immediately before address
POINTA in only the case of the instruction shown on the right side.
Program example 5.6
RC ; Skip instructions
INY
POINT: TABP
LA 0
•
•
If a break with pass count is set at address POINT, the count is taken and execution is
halted only when the instruction at address POINT is executed.
( 30 / 38 )
5.10 External Trigger Signal
(1) External trigger signal input timing
The latch timing of the external trigger signal is shown in Figure 5.3.
System clock
XIN
External trigger signal
TRIG
Figure 5.3 Latch timing of external trigger signal
(2) External trigger signal input characteristics
Trigger breaks work according to the condition (leading edge/trailing edge) of signals input from
the external trace cable. The external trigger signals of the trace points and the external trigger
signals of the break points use the same signals. The input characteristics of the external trigger
signals are shown in Table 5.4 below. See the table before using external trigger signals.
Instruction Next Instruction
Table 5.4 External trigger signal input characteristics
H-level voltage
L-level voltage
5.11 Other Precautions
With the M34502T-MCU if any of the following restrictions applies, it is necessary to evaluate the
system by an evaluation MCU (OTP version).
(1) The system which uses RESET output cannot be evaluated.
(2) The system which uses low-power detection function cannot be evaluated.
(3) The operation cannot be checked by a power-on reset.
(4) After resetting, it is not possible to change to the ceramic oscillation or CR oscillation by starting
up from the on-chip oscillator. After resetting, the system operates by the system clock of the
M34502T-MCU.
(5) As the operating voltage of the M34502T-MCU is 3 V or 5 V, the results of the A-D conversion
may differ from the theoretical values because of the difference with the voltage of the target
system.
Item
Symbol
VIH
VIL
Voltage (V
2.0 V
4.5 V
2.0 V
4.5 V
CC)
Max.
-
-
0.5 V
1.35 V
Min.
1.5 V
3.15 V
-
-
(6) With the M34502T-MCU, it is not possible to evaluate the system which uses the multi
comparator function for 4580 Group.
( 31 / 38 )
MEMO
( 32 / 38 )
6. Connection Circuit Diagram of the M34502T-MCU
Figure 6.1 shows the connection circuit diagram of M34502T-MCU. This circuit diagram depicts the
M34502T-MCU connection centering on circuits connected to the target system. Emulator control
blocks and other similar circuits that are not connected to the target system are omitted in this diagram.
Figure 6.1 Connection circuit diagram of the M34502T-MCU
( 33 / 38 )
MEMO
( 34 / 38 )
7. External Dimensions of the Pitch Converter Board
7.1 M34501T-PTC
Figure 7.1 shows the external dimensions of the M34501T-PTC.
Figure 7.1 External dimensions of the M34501T-PTC
( 35 / 38 )
Appendix A. How to Request for Repair
If your product is found faulty, follow the procedure below to send your product for repair.
Customer Fill in the Repair Request Sheet included with this product, then send it
along with this product for repair to your local distributor. Make sure
that information in the Repair Request Sheet is written in as much detail
as possible to facilitate repair.
Distributor After checking the contents of fault, the distributor should please send
the faulty product along with the Repair Request Sheet to Renesas
Solutions Corp.
Renesas Solutions When the faulty product is repaired, it will be returned to the customer
at the earliest convenience.
CAUTION
Note on Transporting the Product:
•When sending your product for repair, use the packing box and cushion material supplied with this
product when delivered to you and specify handling caution for it to be handled as precision
equipment. If packing of your product is not complete, it may be damaged during transportation.
When you pack your product in a bag, make sure to use conductive polyvinyl supplied with this
product (usually a blue bag). When you use other bags, they may cause a trouble on your product
because of static electricity.
( 36 / 38 )
M34502T-MCU User's Manual
Rev.2.00
July 1, 2004
REJ10J0273-0200Z
COPYRIGHT ©2003-2004 RENESAS TECHNOLOGY CORPORATION
AND RENESAS SOLUTIONS CORPORATION ALL RIGHTS RESERVED
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