The LC66E2316 is an on-chip EPROM version of the
LC6623XX Series CMOS 4-bit single-chip microcontrollers. The LC66E2316 provides the same functions
as the LC662316A, and is pin compatible with that
product. Since the LC66E2316 is provided in a window
package, it can be reprogrammed repeatedly and is thus
optimal for program development.
Features and Functions
• On-chip EPROM capacity of 16 kilobytes, and an on-
chip RAM capacity of 512 × 4 bits.
• Fully supports the LC66000 Series common instruction
set (128 instructions).
• I/O ports: 36 pins
• DTMF generator
This microcontroller incorporates a circuit that can
generate two sine wave outputs, DTMF output, or a
melody output for software applications.
• 8-bit serial interface: one circuit
• Instruction cycle time: 0.95 to 10 µs (at 4.5 to 5.5 V)
• Powerful timer functions and prescalers
— Time limit timer, event counter, pulse width
measurement, and square wave output using a 12-bit
timer.
— Time limit timer, event counter, PWM output, and
square wave output using an 8-bit timer.
— Time base function using a 12-bit prescaler.
• Powerful interrupt system with 10 interrupt factors and
7 interrupt vector locations.
— External interrupts: 3 factors/3 vector locations
— Internal interrupts: 4 factors/4 vector locations
(Waveform output internal interrupts: 3 factors and
1 vector; shared with external expansion interrupts)
• Flexible I/O functions
Selectable options include 20-mA drive outputs, inverter
circuits, pull-up and open-drain circuits.
• Optional runaway detection function (watchdog timer)
• 8-bit I/O functions
• Power saving functions using halt and hold modes.
The LC66E2316 was created for program development, product evaluation, and prototype development for products
based on the LC6623XX Series microcontrollers. Keep the following points in mind when using this product.
1. After a reset
The RES pin must be held low for an additional 3 instruction cycles after the oscillator stabilization period has
elapsed. Also, the port output circuit types are set up during the 9 instruction cycles immediately after RES is set
high. Only then is the program counter set to 0 and program execution started from that location. (The port output
circuits all revert to the open-drain type during periods when RES is low.)
V
min
V
DD
OSC
RES
DD
At least 10 ms
Oscillator
stabilization
At least 3
instruction
Program execution (PC)
Port output type
Open drain
Option switching
period
9 instruction
cycles
Location 0Location
1
Option specification
2. Notes on LC6623XX evaluation
The high end of the EPROM area (locations 3FF0H to 3FFFH) are the option specification area. Option specification
data must be programmed for and loaded into this area. The Sanyo specified cross assembler for this product is the
program LC66S.EXE. Also, insert JMP instructions so that user programs do not attempt to execute addresses that
exceed the capacity of the mask ROM, and write zeros (00H) to areas (other than 3FF0H to 3FFFH) that exceed the
actual capacity of the mask ROM.
3. Always apply an opaque seal to the window on the LC66E2316 package when actually using the device.
Main differences between the LC66E2316, LC66P2316, and LC6623XX Series
ItemLC6623XX Series (mask version)LC66E2316LC66P2316
Differences in the main
characteristics–30 to +70°C+10 to +40°C–30 to +70°C
• Operating temperature range
• Operating supply voltage/operating
frequency (cycle time)
• Input high-level current (RES)Maximum: 1 µA(normal operation and halt mode)(normal operation and halt mode)
• Current drain
(Operating at 4 MHz)
(Halt mode at 4 MHz)Typical: 10 nA, maximum: 10 µA*Typical: 10 nA, maximum: 10 µA*
(Hold mode)
Port output types at reset
Package
3.5 to 5.5 V/0.95 to 10 µs4.5 to 5.5 V/0.95 to 10 µs4.0 to 5.5 V/0.95 to 10 µs
Typical: 10 µA Typical: 10 µA
Hold mode: 1 µA maximumHold mode: 1 µA maximum
Typical: 10 nA, maximum: 10 µA
The output type specified in
the options
• DIP42S• DIC42S window package• DIP42S
• QFP48E• QFC48 window package• QFP48E
Larger than that for the mask versions Larger than that for the mask versions
Open-drain outputsOpen-drain outputs
Note: * Although the microcontroller will remain in hold mode if the RES pin is set low while it is in hold mode, always use the reset start sequence (after
switching HOLD from low to high, switch RES from low to high) when clearing hold mode. Also not that a current of about 100 µA flows from the
RES pin when it is low. This increases the hold mode current drain by about 100 µA.
See the data sheets for the individual products for details on other differences.
No. 5486-4/26
System Block Diagram
LC66E2316
RES
TEST
OSC1
SYSTEM
CONTROL
OSC2
HOLD
ML
DT
DTMF
GEN.
PE
PD
PC
Pin Function Overview
RAM STACK
(512W)
FLAG
E
D
D
D
SPEA
M
P
P
P
R
X
L
H
PRESCALER
CZ
D
P
Y
ALU
MPX TIMER0 SERIAL I/O 0
MPX
INTERRUPT
CONTROL
MPX
TIMER1
P0P1P2P3P4P5P6
EPROM
16KB
PC
INV
EPROM
control
POUT0
SI0
SO0
SCK0
INT0
INT1. INT2
PIN1. POUT1
xOINVxI
(x=0 to 3)
A0 to A13
D0 to D7
CE
DASEC
Vpp/OE
EPMOD
TA
PinI/OOverviewOutput driver typeOptions
P00/D0
P01/D1
P02/D2
P03/D3
P10/D4
P11/D5
P12/D6
P13/D7
P20/SI0/A0
P21/SO0/A1
P22/SCK0/
A2
P23/INT0/A3
I/O ports P00 to P03
• Input or output in 4-bit or 1-bit units
• P00 to P03 support the halt mode
I/O
control function (This function can be
specified in bit units.)
• Used as data pins in EPROM mode
I/O ports P10 to P13
• Input or output in 4-bit or 1-bit units
I/O
• Used as data pins in EPROM mode
I/O ports P20 to P23
• Input or output in 4-bit or 1-bit units
• P20 is also used as the serial input SI0
pin.
• P21 is also used as the serial output
SO0 pin.
• P22 is also used as the serial clock
I/O
SCK0 pin.
• P23 is also used as the INT0 interrupt
request pin, and also as the timer 0
event counting and pulse width
measurement input.
• Used as address pins in EPROM mode
• Pch: Pull-up MOS type
• Nch: Intermediate sink current
type
• Pch: Pull-up MOS type
• Nch: Intermediate sink current
type
• Pch: CMOS type
• Nch: Intermediate sink current
type
• Pull-up MOS or
Nch OD output
• Output level on
reset
• Pull-up MOS or
Nch OD output
• Output level on
reset
CMOS or Nch OD
output
State after a Standby mode
resetoperation
Hold mode:
High or low
(option)
High or low
(option)
H
Output off
Halt mode:
Output
retained
Hold mode:
Output off
Halt mode:
Output
retained
Hold mode:
Output off
Hold mode:
Output off
Continued on next page.
No. 5486-5/26
Continued from preceding page.
LC66E2316
PinI/OOverviewOutput driver typeOptions
I/O ports P30 to P32
• Input or output in 3-bit or 1-bit units
P30/INT1/A4
P31/POUT0/
A5
P32/POUT1/
A6
P33/HOLD
P40/INV0I/
A7
P41/INV0O/
A8
P42/INV1I/
A9
P43/INV1O/
A10
• P30 is also used as the INT1 interrupt
request.
• P31 is also used for the square wave
output from timer 0.
I/O
• P32 is also used for the square wave
and PWM output from timer 1.
• P31 and P32 also support 3-state
outputs.
• Used as address pins in EPROM mode
Hold mode control input
• Hold mode is set up by the HOLD
instruction when HOLD is low.
• In hold mode, the CPU is restarted by
setting HOLD to the high level.
• This pin can be used as input port P33
I
along with P30 to P32.
• When the P33/HOLD pin is at the low
level, the CPU will not be reset by a
low level on the RES pin. Therefore,
applications must not set P33/HOLD
low when power is first applied.
I/O ports P40 to P43
• Input or output in 4-bit or 1-bit units
• Input or output in 8-bit units when used
in conjunction with P50 to P53.
• Can be used for output of 8-bit ROM
I/O
data when used in conjunction with
P50 to P53.
• Dedicated inverter circuit (option)
• Used as address pins in EPROM mode
• Pch: CMOS type
• Nch: Intermediate sink current
type
• Pch: Pull-up MOS type
• CMOS type when the inverter
circuit option is selected
• Nch: Intermediate sink current
type
CMOS or Nch OD
output
• Pull-up MOS or
Nch OD output
• Output level on
reset
• Inverter circuit
State after a Standby mode
resetoperation
Hold mode:
Output off
H
Halt mode:
Output
retained
Hold mode:
• High or
low
(option)
• Inverter
I/O is set
to the
output off
state.
Port output
off, inverter
output off
Halt mode:
Port output
retained,
inverter
output
continues
P50/A11
P51/A12
P52/A13
P53/INT2/TA
P60/ML
P61
P62/DT
P63/PIN1
I/O ports P50 to P53
• Input or output in 4-bit or 1-bit units
• Input or output in 8-bit units when used
in conjunction with P40 to P43.
• Can be used for output of 8-bit ROM
I/O
data when used in conjunction with
P40 to P43.
• P53 is also used as the INT2 interrupt
request.
• Used as address pins in EPROM mode
I/O ports P60 to P63
• Input or output in 4-bit or 1-bit units
• P60 is also used as the melody output
ML pin.
I/O
• P62 is also used as the tone output DT
pin.
• P63 is also used for the event count
input to timer 1.
• Pch: Pull-up MOS type
• Nch: Intermediate sink current
type
• Pch: CMOS type
• Nch: Intermediate sink current
type
• Pull-up MOS or
Nch OD output
• Output level on
reset
CMOS or Nch OD
output
Hold mode:
Output off
High or low
(option)
Halt mode:
Output
retained
Hold mode:
Output off
H
Halt mode:
Output
retained
Continued on next page.
No. 5486-6/26
Continued from preceding page.
LC66E2316
PinI/OOverviewOutput driver typeOptions
PC2/CE
PC3/DASEC
PD0/INV2I
PD1/INV2O
PD2/INV3I
PD3/INV3O
PE0
PE1
OSC1
OSC2
I/O ports PC2 to PC3
• Output in 2-bit or 1-bit units
I
• PC3 is also used as the control CE and
DASEC pin in EPROM mode.
Dedicated input ports PD0 to PD3
I
Dedicated inverter circuits (option)
I
Dedicated input ports
System clock oscillator connections
I
When an external clock is used, leave
O
OSC2 open and connect the clock signal
to OSC1.
• Pch: CMOS type
• Nch: Intermediate sink current
type
• When the inverter circuit
option is selected.
• Pch: CMOS type
• Nch: Intermediate sink current
type
CMOS or Nch OD
output
Inverter circuits
Ceramic oscillator
or external clock
selection
State after a Standby mode
resetoperation
Hold mode:
Port output
H
Normal
input
Inverter I/O
goes to the
output off
state.
Option
selection
off
Halt mode:
Port output
retained
Hold mode:
Inverter
Output off
Halt mode:
Inverter
output
continues
Hold mode:
input
disabled
Halt mode:
inputs
accepted
Hold mode:
oscillator
stops
Halt mode:
oscillator
continues
System reset input
/
RES/V
PP
OE
TEST/
EPMOD
V
DD
V
SS
Note: Pull-up MOS type: The output circuit includes a MOS transistor that pulls the pin up to VDD.
CMOS output: Complementary output.
OD output: Open-drain output.
• When the P33/HOLD pin is at the high
level, a low level input to the RES pin
I
will initialize the CPU.
• This pin is also used as the V
pin in EPROM mode.
CPU test pin
This pin must be connected to V
during normal operation. Setting this pin
I
to +12 V switches the LC66E2316 to
EPROM mode.
Power supply pins
/OE
PP
SS
No. 5486-7/26
LC66E2316
User Options
1. Port 0, 1, 4, and 5 output level at reset option
The output levels at reset for I/O ports 0, 1, 4, and 5, in independent 4-bit groups, can be selected from the following
two options.
OptionConditions and notes
1. Output high at resetThe four bits of ports 0, 1, 4, or 5 are set in a group
2. Output low at resetThe four bits of ports 0, 1, 4, or 5 are set in a group
2. Oscillator circuit options
• Main clock
OptionCircuitConditions and notes
1. External clock
2. Ceramic oscillator
Note: There is no RC oscillator option.
OSC1
C1
Ceramic oscillator
C2
The input has Schmitt characteristics
OSC1
OSC2
3. Watchdog timer option
A runaway detection function (watchdog timer) can be selected as an option.
4. Port output type options
• The output type of each bit (pin) in ports P0, P1, P2, P3 (except for the P33/HOLD pin), P4, P5, P6, and PC can be
selected individually from the following two options.
OptionCircuitConditions and notes
1. Open-drain output
2. Output with built-in pull-up
resistor
Output data
Input data
DSB
Output data
Input data
DSB
The port P2, P3, P5, and P6 inputs have Schmitt
characteristics.
The port P2, P3, P5, and P6 inputs have Schmitt
characteristics.
The CMOS outputs (ports P2, P3, P6, and PC)
and the pull-up MOS outputs (P0, P1, P4, and
P5) are distinguished by the drive capacity of the
p-channel transistor.
No. 5486-8/26
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