7

MITSUBISHI MICROCOMPUTERS

M37754M6C-XXXGP

M37754M6C-XXXHP

PRELIMINAR

Y

Notice:

This

is not

a final

specification.

Some

parametric

limits

are

subject

to change.

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

BASIC FUNCTION BLOCKS

The M37754M6C-XXXGP and M37754M6C-XXXHP has the same

functions as the M37754M8C-XXXGP and M37754M8C-XXXHP ex-

cept for the following :

(1) The ROM size is different.

(2) The function of ROM area modification is not available.

Therefore, refer to the section on the M37754M8C-XXXGP.

MEMORY

The memory map is shown in Figure 1. The address space is 16

vided into 64-Kbyte units called banks. The banks are numbered

Internal ROM, internal RAM, and control registers for internal periph-

ROM.

addresses and contain the interrupt vectors. Refer to the section on

interrupts for details.

nal RAM. In addition to storing data, the RAM is used as stack during

a subroutine call, or interrupts.

I/O ports, A-D converter, D-A converter, UART, timer, and interrupt

control registers.

using the direct page register DPR. In direct page addressing mode,

the memory in the direct page area can be accessed with two words

thus reducing program steps.

Note: Internal ROM area can be modified. (Refer to the section on ROM area modification function.)

Internal RAM

2048 bytes

Peripherai devices

control registers

Interrupt vector table

A-D

UART1 transmit

UART1 receive

UART0 transmit

UART0 receive

Timer B2

Timer B1

Timer B0

Timer A4

Timer A3

Timer A2

Timer A1

Timer A0

Watchdog timer

BRK instruction

Zero divide

see Fig. 2 for

further information

DBC

RESET























































•

•

•

•

•

•

•

•

•

•

•

•

•

Internal ROM

48 Kbytes



















Fig. 1 Memory map