7480 datasheet(189/337 Pages) RENESAS

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7480 Group and 7481 Group User's Manual

1-172

1.20 Built-in PROM Version

HARDWARE

1.20.1 EPROM Mode

The built-in PROM version has the EPROM mode in addition to the operation modes of the mask ROM

version. The EPROM mode is the mode used to program into and read from the built-in PROM. Programming,

reading and erasing of the built-in PROM can be performed by the same operation as in the M5M27C256K.

Table 1.20.2 lists the pin functions in the EPROM mode, and Figures 1.20.1 to 1.20.3 show the pinouts.

Table 1.20.2 Pin Functions in EPROM Mode

Built-in PROM version

VCC

P33

VSS

P11–P17,

P20–P23,

P30, P31,

P40, P41

P00–P07

VREF

P32

M5M27C256K

VCC

VPP

VSS

A0–A14

D0–D7

Pin name

Figure 1.20.1 Pinout in EPROM Mode of 7480 Group

A10

VSS

A14

A13

VPP

A12

A11

VCC

VSS

: PROM pin (Same functions as M5M27C256K)

P17/SRDY

P16/SCLK

P15/TXD

P14/RXD

P13/T1

P12/T0

P11

P10

P23/IN3

P22/IN2

P21/IN1

P20/IN0

VREF

XIN

XOUT

VSS

P07

P06

P05

P04

P03

P02

P01

P00

P41/CNTR1

P40/CNTR0

P33

P32

P31/INT1

P30/INT0

RESET

VCC

Outline 32P4B

32P2W-A (Note)

The only differences between the 32P4B package product and the 32P2W-A package product are

package shape and the absolute maximum ratings.

Note:

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