M34551E8FP View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part Name

Description

Manufacturer

M34551E8FP

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTER

MITSUBISHI ELECTRIC  

MITSUBISHI MICROCOMPUTERS

4551 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for

INFRARED REMOTE CONTROL TRANSMITTER

BUILT-IN PROM VERSION

In addition to the mask ROM version, the 4551 Group has the

programmable ROM version software compatible with mask

ROM. The One Time PROM version has PROM which can only

be written to and not be erased.

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

mask ROM version, but it has a PROM mode that enables writing

to built-in PROM.

Table 20 Product of built-in PROM version

Product

M34551E8-XXXFP

M34551E8FP

PROM size

(! 10 bits)

8192 words

RAM size

(! 4 bits)

280 words

Table 20 shows the product of built-in PROM version. Figure 41

shows the pin configurations of built-in PROM version. The One

Time PROM version has pin-compatibility with the mask ROM

version.

Package

48P6S-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)

SEG9

SEG10

SEG11

SEG12

VSS

SEG13

SEG14

SEG15

P20 / SEG16

P21 / SEG17

38 37 36 35 34 33 32 31 30 29 28 27 26 25

39

24

40

23

41

22

42

21

43

20

M34551E8-XXXFP

44

19

45

18

46

17

47

16

48

15

1 2 3 4 5 6 7 8 9 10 11 12 13 14

D7/XCOUT

D6/XCIN

CNVSS

XOUT

XIN

VSS

VDD

CARR

D5 / INT

D4

Outline 48P6S-A

Fig. 41 Pin configuration of built-in PROM version

65

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