M34570M4-XXXFP View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

M34570M4-XXXFP

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

Renesas Electronics 

MITSUBISHI MICROCOMPUTERS

4570 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

DATA MEMORY (RAM)

1 word of RAM is composed of 4 bits, but 1-bit manipulation

(with the SB j, RB j, and SZB j instructions) is enabled for the

entire memory area. A RAM address is specified by a data

pointer. The data pointer consists of registers Z, X, and Y. Set a

value to the data pointer certainly when executing an instruction

to access RAM.

Table 2 shows the RAM size. Figure 12 shows the RAM map.

Table 2 RAM size

Product

M34570Mx

M34570Ex

RAM size

128 words ! 4 bits (512 bits)

Fig. 12 RAM map

RAM 128 words ! 4 bits (512 bits)

Register Z

0

Register X 0 1 2 3 ... 6 7

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

128 words

12

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