TMP88PS38

2005-05-18

88PS38-3

Operational Description

The configuration and function of the TMP88PS38 are the same as those of the TMP88CS38,

except in that a one-time PROM is used instead of an on-chip mask ROM.

1.

Operation Mode

The TMP88PS38 has two mode: MCU and PROM.

1.1

MCU Mode

The MCU mode is activated by fixing the TEST/VPP pin at low level.

In the MCU mode, operation is the same as with the TMP88CS38.

1.1.1

Program Memory

The TMP88PS38 has a 64 Kbytes (Addresses 04000H to 13EFFH in the MCU mode,

addresses 10000H to 1FEFFH in the PROM mode) of program storage area, 24 Kbytes

(Addresses 20000H to 25FFFH in the MCU mode, addresses 0A000H to 0FFFFH in the

PROM mode) and 256 bytes (Addresses FFF00H to FFFFFH in the MCU mode, addresses

1FF00H to 1FFFFH in the PROM mode) one-time PROM of vector table storage area.