7470/7471 Group

Features:

Basic machine-language instructions ......................................71
Memory size
ROM ..................................................... 4096 bytes (M37471M2)
RAM........................................................ 128 bytes (M37471M2)
The minimum instruction execution time
....................................... 0.5 s (at 8 MHz oscillation frequency)
Power source voltage
..............2.7 to 4.5 V (at 2.2VCC2.0 MHz oscillation frequency)
...............................4.5 to 5.5 V (at 8 MHz oscillation frequency)
Power dissipation in normal mode
...................................35 mW (at 8.0 MHz oscillation frequency)
Subroutine nesting ......64 levels max. (M37470M2, M37471M2)
Interrupt ................................................... 12 sources, 10 vectors
8-bit timers.................................................................................. 4
Programmable I/O ports
(Ports P0, P1, P2, P4)........................................   .22(7470 group)
                                                                             28(7471 group)
Input port (Port P3)...............................................4(7470 group)
                  (Ports P3, P5).......................................8(7471 group)
Serial I/O (8-bit).......................................................................... 1
A-D converter ............................... 8-bit, 4channels (7470 group)
                                                      8-bit, 8channels (7471 group)


Application

Audio-visual equipment, VCR, Tuner, Office automation equipment


Specifications

Symbol	Parameter	Conditions	Ratings	Unit
VCC	Power source voltage	All voltages are based on VSS. Output transistors are cut off.	0.3 to 7	V
VI	Input voltage XIN		0.3 to VCC +0.3	V
VI	Input voltage   P00P07, P10P17, P20P23,                         P30P33, P40, P41, VREF, RESET		0.3 to VCC +0.3	V
VO	Output voltage     P00P07, P10P17, P20P23,                             P40, P41, XOUT		0.3 to VCC +0.3	V
Pd	Power dissipation	Ta = 25°C	1000	mW
Topr	Operating temperature		20 to 85
Tstg	Storage temperature		40 to 150

Description

The 7470/7471 Group is a single-chip microcomputer designed with CMOS silicon gate technology. It is housed in a 32-pin shrink plastic molded DIP. The M37471M2-XXXSP/FP is a single-chip mi- crocomputer designed with CMOS silicon gate technology. It is housed in a 42-pin shrink plastic molded DIP or a 56-pin plastic molded QFP. These single-chip microcomputer are useful for business equip- ment and other consumer applications. In addition to the simple instruction set of the 7470/7471 Group, the ROM, RAM, and I/O addresses are placed on the same memory map to enable easy
programming . The differences between the M37471M2-XXXSP and the M37471M2-XXXFP are the package outline and the power dissi- pation ability (absolute maximum ratings). The differences among M37470M2-XXXSP, M37470M4-XXXSP, M37470M8-XXXSP, M37471M2-XXXSP/FP, M37471M4-XXXSP/ FP and M37471M8-XXXSP/FP are noted below.