MITSUBISHI MICROCOMPUTERS
7470/7471 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
FUNCTIONS OF 7470/7471 GROUP
Parameter
Functions
Basic machine-language instructions
Instruction execution time
71
0.5 µs (the minimum instructions, at 8 MHz oscillation frequency)
Clock input oscillation frequency
8 MHz (max.)
M37470M2
M37471M2
M37470M4/E4
M37471M4/E4
M37470M8/E8
M37471M8/E8
P0, P1
ROM
4096 bytes
RAM
ROM
RAM
ROM
RAM
I/O
128 bytes
8192 bytes
Memory size
192 bytes
16384 bytes
384 bytes
8-bit ✕ 2
P2
I/O
8-bit ✕ 1 (4-bit ✕ 1 for 7470 group)
4-bit ✕ 2 (Port P5 is not included in 7470 group)
4-bit ✕ 1 (2-bit ✕ 1 for 7470 group)
8-bit ✕ 1
Input/Output port
P3, P5
Input
I/O
P4
Serial I/O
Timers
8-bit timer ✕ 4
A-D converter
8-bit ✕ 1 (8 channels) (8-bit ✕ 1 (4 channels) for M37470M2/M4/M8)
64 level max. (M37470M2, M37471M2)
96 level max. (M37470M4/E4, M37471M4/E4)
192 level max. (M37470M8/E8, M37471M8/E8)
5 external interrupts, 6 internal interrupts, 1 software interrupt
Subroutine nesting
Interrupt
Built-in circuit with internal feedback resistor (a ceramic or a quartz-
crystal oscillator)
Clock generating circuit
2.7 to 4.5 V (at 2.2VCC–2.0 MHz oscillation frequency),
4.5 to 5.5 V (at 8 MHz oscillation frequency)
Power source voltage
Power dissipation
35 mW (at 8 MHz oscillation frequency)
5 V
Input/Output voltage
Output current
Input/Output characters
–5 to 10 mA (P0, P1, P2, P4 : CMOS tri-states)
–20 to 85°C
Operating temperature range
Device structure
CMOS silicon gate
M37470M2/M4/M8/E4/E8-XXXSP
32-pin shrink plastic molded DIP
42-pin shrink plastic molded DIP
56-pin plastic molded QFP
42-pin ceramic DIP
M37471M2/M4/M8/E4/E8-XXXSP
M37471M2/M4/M8/E4/E8-XXXFP
M37471E8SS
Package
6
ETC [ ETC ]
