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7478, 7478 / 22-05-3021, 7478 / 22-05-3031

Table of contents:
Info of 7478
Info of 7478 / 22-05-3021
Info of 7478 / 22-05-3031

7478, 7478 / 22-05-3021, 7478 / 22-05-3031 Selling Leads, Datasheet

MFG:04-05+ Package Cooled:QFN-16 D/C:NO

7478, 7478 / 22-05-3021, 7478 / 22-05-3031 Picture

7478, 7478 / 22-05-3021, 7478 / 22-05-3031 Datasheet download

Five Points

Part Number: 7478

MFG: 04-05+

Package Cooled: QFN-16

D/C: NO

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7478 General Description

The 7477/7478 group is the single-chip microcomputer designed with CMOS silicon gate technology.

The single-chip microcomputer is useful for business equipment and other consumer applications.

In addition to its simple instruction set, the ROM, RAM, and I/O addresses are placed on the same memory map to enable easy programming.
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In addition, built-in PROM type microcomputers with built-in elec-trically writable PROM, and additional functions equivalent to the mask ROM version are also available.

7477/7478 group products are shown noted below.

The 7477 and the 7478 differ in the number of I/O ports, package outline, and clock generating circuit only.

7478 Maximum Ratings

Symbol	Parameter	Conditions	Ratings	Unit
V_CC	Power source voltage	All voltages are based on VSS. Output transistors are cut off	0.3 to 7	V
V_I	Input voltage XIN		0.3 to VCC +0.3	V
V_I	Input voltage P00 P07, P10 P17, P20 P2₃, P3₀ P3₃, P4₀, P4₁, V_REF, RESET		0.3 to VCC +0.3	V
V_O	Output voltage P0₀ P0₇, P1₀ P1₇, P4₀, P4₁, X_OUT		0.3 to VCC +0.3	V
P_d	Power dissipation	Ta = 25°C	1000 (Note)	mW
T_opr	Operating temperature		20 to 85	°C
T_stg	Storage temperature		40 to 150	°C

7478 Features

Basic machine-language instructions ...................................... 71
Memory size
   ROM.................................... 8192 bytes (M37477M4, M37478M4)
   RAM ...................................... 192 bytes (M37477M4, M37478M4)
The minimum instruction execution time
   .............................................0.5µs (at 8MHz oscillation frequency)
Power source voltage
   ................ 2.7 to 4.5V (at 2.2VCC 2.0MHz oscillation frequency)
   .................................... 4.5 to 5.5V (at 8MHz oscillation frequency)
Power dissipation in normal mode
   ............................................ 35mW (at 8MHz oscillation frequency)
Subroutine nesting
   ......................................... 96 levels max. (M37477M4, M37478M4)
Interrupt ................................................... 13 sources, 11 vectors
8-bit timers ................................................................................. 4
Programmable I/O ports
   (Ports P0, P1, P4) ................................................. 18 (7477 group)
   20 (7478 group)
Input ports (Ports P2, P3) ...................................... 8 (7477 group)
   (Ports P2, P3, P5) ................................................. 16 (7478 group)
8-bit serial I/O................................. 1 (UART or clock-synchronized)
8-bit A-D converter ................................... 4 channels (7477 group)
                                                                      8 channels (7478 group)

7478 Connection Diagram

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