M34250M2 查看數據表（PDF） - Renesas Electronics

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M34250M2

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

Renesas Electronics 

MITSUBISHI MICROCOMPUTERS

4250 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

BUILT-IN PROM VERSION

In addition to the mask ROM versions, the 4250 Group has the

One Time PROM versions whose PROMs can only be written to

and not be erased.

The built-in PROM version has functions similar to those of the

mask ROM versions, but it has PROM mode that enables writing

to built-in PROM.

Table 15 shows the product of built-in PROM version. Figure 31

and 32 show the pin configurations of built-in PROM versions.

The One Time PROM version has pin-compatibility with the mask

ROM version.

Table 15 Product of built-in PROM version

Product

PROM size

(! 9 bits)

M34250E2-XXXFP *

M34250E2FP *

*: Under development

2048 words

RAM size

(! 4 bits)

64 words

Package

20P2N-A

ROM type

One Time PROM [shipped after writing]

(shipped after writing and test in factory)

One Time PROM [shipped in blank]

PIN CONFIGURATION (TOP VIEW)

VDD

1

20

VSS

2

19

XIN

3

18

XOUT

4

17

CNVSS

5

16

RESET

6

15

F0

7

14

F1

8

13

G0/INT

9

12

G1/TOUT

10

11

Outline 20P2N-A

Fig. 31 Pin configuration of built-in PROM version

D0

D1

D2/C

D3/K

S0

S1

S2

S3

G3

G2

54

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