The M37735MHLXXXHP is a single-chip microcomputer using the
7700 Family core. This single-chip microcomputer has a CPU a
bus interface unit. The CPU is a 16-bit parallel processor t
an 8-bit parallel processor, and the bus interface unit enha
nd a
hat can be
nces the
memory access efficiency to execute instructions fast. This
microcomputer also includes a 32 kHz oscillation circuit, in
to the ROM, RAM, multiple-function timers, serial I/O, A-D c
addition
onverter,
and so on.
Its strong points are the low power dissipation, the low sup
ply voltage
and the small package.
FEATURES
●Number of basic instructions .................................................. 103
Control devices for general commercial equipment such as office
automation, office equipment, personal information equipment
so on.
Control devices for general industrial equipment such as
communication equipment, and so on.
Operating temperature range–40 to 85 °C
Device structureCMOS high-performance silicon gate process
Package80-pin plastic molded fine-pitch QFP (80P6D-A;0.5 mm lead pitch)
3 external types, 16 internal types
Each interrupt can be set to the priority level (0 – 7.)
2 circuits built-in (externally connected to a ceramic resonator or a
22.5 mW (at 5 V supply voltage, external clock 12 MHz frequency)
Input/Output voltage5 V
Output current5 mA
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
3
MITSUBISHI MICROCOMPUTERS
M37735MHLXXXHP
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
PIN DESCRIPTION
PinNameInput/OutputFunctions
Vcc,Power sourceApply 2.7 – 5.5 V to Vcc and 0 V to Vss.
Vss
CNVssCNVss inputInputThis pin controls the processor mode. Connect to Vss for the single-chip mode and the memory
RESETReset inputInputWhen “L” level is applied to this pin, the microcomputer enters the reset state.
XINClock inputInput
XOUTClock outputOutput
EEnable outputOutputIn the single-chip mode, this pin functions as the enable signal output pin which indicates the
BYTE
AVcc,Analog powerPower source input pin for the A-D converter. Externally connect AVcc to Vcc and AVss to Vss.
AVsssource input
VREFReference InputThis is reference voltage input pin for the A-D converter.
P00 – P07 I/O port P0I/OIn the single-chip mode, port P0 becomes an 8-bit I/O port. An I/O direction register is available so
P10 – P17 I/O port P1I/OIn the single-chip mode, these pins have the same functions as port P0. When the BYTE pin is set
P20 – P27 I/O port P2I/OIn the single-chip mode, these pins have the same functions as port P0. In the memory expansion
P30 – P33 I/O port P3I/OIn the single-chip mode, these pins have the same function as port P0. In the memory expansion
P40 – P47 I/O port P4I/OIn the single-chip mode, these pins have the same functions as port P0. In the memory expansion
P50 – P57 I/O port P5I/OIn addition to having the same functions as port P0 in the single-chip mode, these pins also
P60 – P67 I/O port P6I/OIn addition to having the same functions as port P0 in the single-chip mode, these pins also
P70 – P77 I/O port P7I/OIn addition to having the same functions as port P0 in the single-chip mode, these pins function
P80 – P87 I/O port P8I/OIn addition to having the same functions as port P0 in the single-chip mode, these pins also
External data
bus width
selection input
voltage input
InputIn the memory expansion mode or the microprocessor mode, this pin determines whether the
expansion mode, and to Vcc for the microprocessor mode.
These are pins of main-clock generating circuit. Connect a ceramic resonator or a quartzcrystal oscillator between XIN and XOUT. When an external clock is used, the clock source should
be connected to the XIN pin, and the XOUT pin should be left open.
access status in the internal bus.
In the memory expansion mode or the microprocessor mode, this pin functions as the RDE signal
output pin.
external data bus has an 8-bit width or a 16-bit width. The data bus has a 16-bit width when “L”
signal is input and an 8-bit width when “H” signal is input.
that each pin can be programmed for input or output. These ports are in the input mode when
reset.
In the memory expansion mode or the microprocessor mode, these pins output CS0 – CS4,
RSMP signals, and address (A16, A17).
to “L” in the memory expansion mode or the microprocessor mode and external data bus has a
16-bit width, high-order data (D8 – D15) is input/output or an address (A8 – A15) is output. When
the BYTE pin is “H” and an external data bus has an 8-bit width, only address (A8 – A15) is output.
mode or the microprocessor mode, low-order data (D0 – D7) is input/output or an address
(A0 – A7) is output.
mode or the microprocessor mode, WEL, WEH, ALE, and HLDA signals are output.
mode or the microprocessor mode, P40, P41, and P42 become HOLD and RDY input pins, and
clock φ 1 output pin, respectively.
Functions of the other pins are the same as in the single-chip mode. However, in the memory
expansion mode, P42 also functions as an I/O port.
function as I/O pins for timers A0 to A3 and input pins for key input interrupt input (KI0 – KI3).
function as I/O pins for timer A4, input pins for external interrupt input (INT0 – INT2) and input pins
for timers B0 to B2. P67 also functions as sub-clock φ SUB output pin.
as input pins for A-D converter. P72 to P75 also function as I/O pins for UART2. Additionally, P76
and P77 have the function as the output pin (XCOUT) and the input pin (XCIN) of the sub-clock
(32 kHz) oscillation circuit, respectively. When P76 and P77 are used as the XCOUT and XCIN pins,
connect a resonator or an oscillator between the both.
function as I/O pins for UART 0 and UART 1.
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
4
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
MITSUBISHI MICROCOMPUTERS
M37735MHLXXXHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
BASIC FUNCTION BLOCKS
The M37735MHLXXXHP has the same functions as the
M37735MHBXXXFP except for the package and the reset circuit.
Refer to the section on the M37735MHBXXXFP.
RESET CIRCUIT
The microcomputer is released from the reset state when the RESET
pin is returned to “H” level after holding it at “L” level with the power
source voltage at 2.7 – 5.5 V. Program execution starts at the address
formed by setting address A
of address FFFF
Figure 1 shows an example of a reset circuit. When the stabilized
clock is input from the external to the main-clock oscillation circuit,
the reset input voltage must be 0.55 V or less when the power source
voltage reaches 2.7 V. When a resonator/oscillator is connected to
the main-clock oscillation circuit, change the reset input voltage from
“L” to “H” after the main-clock oscillation is fully stabilized.
The status of the internal registers during reset is the same as the
M37735MHBXXXFP’s.
RESET
16, and A7 – A0 to the contents of address FFFE16.
Note. In this case, stabilized clock is input from the
external to the main-clock oscillation circuit.
Perform careful evalvation at the system design
level before using.
23 – A16 to 0016, A15 – A8 to the contents
Power on
V
CC
V
CC
0V
RESET
0V
2.7V
0.55V
_____
ADDRESSING MODES
The M37735MHLXXXHP has 28 powerful addressing modes. Refer
to the “7700 Family Software Manual” for the details.
MACHINE INSTRUCTION LIST
The M37735MHLXXXHP has 103 machine instructions. Refer to the
“7700 Family Software Manual” for the details.
DATA REQUIRED FOR MASK ROM ORDERING
Please send the following data for mask orders.
(1) M37735MHLXXXHP mask ROM order confirmation form
(2) 80P6D, 80P6Q mark specification form
(3) ROM data (EPROM 3 sets)
Fig. 1 Example of a reset circuit
5
MITSUBISHI MICROCOMPUTERS
M37735MHLXXXHP
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
ABSOLUTE MAXIMUM RATINGS
SymbolParameter ConditionsRatingsUnit
VccPower source voltage–0.3 to +7V
AVccAnalog power source voltage–0.3 to +7V
VIInput voltage RESET, CNVss, BYTE –0.3 to +12V
Low-level peak output current P44 – P47, P50 – P53
Low-level average output current P00 – P07, P10 – P17, P20 – P27, P30 – P33,
be 80 mA or less, the sum of IOL(peak) for ports P4, P5, P6, and P7 must be 100 mA or less, and the sum of IOH(peak) for ports P4, P5,
P6, and P7 must be 80 mA or less.