M34512M2 Datasheet, PDF (3/80 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
4512 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PERFORMANCE OVERVIEW
Parameter
Function
Number of basic instructions
117
Minimum instruction execution time
0.75 µs (at 4.0 MHz oscillation frequency, in high-speed mode)
Memory sizes ROM
M34512M2 2048 words ! 10 bits
M34512M4 4096 words ! 10 bits
RAM
M34512M2 128 words ! 4 bits
M34512M4 256 words ! 4 bits
Input/Output D0–D7 I/O
Eight independent I/O ports. Input is examined by skip decision.
ports
P00–P03 I/O
4-bit I/O port; each pin is equipped with a pull-up function and a key-on wakeup function. Both
functions can be switched by software.
P10–P13 I/O
4-bit I/O port; each pin is equipped with a pull-up function and a key-on wakeup function. Both
functions can be switched by software.
P20–P22 Input
3-bit input port; ports P20, P21 and P22 are also used as SCK, SOUT and SIN, respectively.
INT0
Input
1-bit input; INT0 pin is equipped with a key-on wakeup function.
INT1
Input
1-bit input; INT1 pin is equipped with a key-on wakeup function.
Timers
Timer 1
8-bit programmable timer with a reload register.
Timer 2
8-bit programmable timer with a reload register.
Timer 3
8-bit programmable timer with a reload register.
Timer 4
8-bit programmable timer with a reload register.
A-D converter
10-bit wide, This is equipped with an 8-bit comparator function.
Serial I/O
8-bit ! 1
Interrupt
Sources
8 (two for external, four for timer, one for A-D, and one for serial I/O)
Nesting
1 level
Subroutine nesting
8 levels
Device structure
CMOS silicon gate
Package
32-pin plastic molded LQFP(32P6B-A)
Operating temperature range
–20 °C to 85 °C
Supply voltage
4.0 V to 5.5 V
Power
dissipation
Active mode
3.0 mA (at VDD = 5.0 V, 4.0 MHz oscillation frequency, in high-speed mode, output transistors
in the cut-off state)
(typical value) RAM back-up mode 0.1 µA (at room temperature, VDD = 5 V, output transistors in the cut-off state)
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