MITSUBISHI MICROCOMPUTERS
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
BUILT-IN PROM VERSION
Table 10 shows the product of built-in PROM version. Figure 26
and 27 show the pin configurations of built-in PROM versions.
The One Time PROM version has pin-compatibility with the mask
ROM version.
In addition to the mask ROM versions, the 4280 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 10 Product of built-in PROM version
PROM size
(✕ 9 bits)
RAM size
(✕ 4 bits)
32 words
32 words
Product
Package
ROM type
M34280E1FP
M34280E1GP
1024 words
1024 words
20P2N-A
One Time PROM [shipped in blank]
One Time PROM [shipped in blank]
20P2E/F-A
PIN CONFIGURATION (TOP VIEW)
VSS
1
2
VDD
CARR
D0
20
E2
E1
19
18
17
16
15
14
13
12
11
3
4
D1
XIN
XOUT
E0
D2
5
D3
6
G0
D4
7
D5
G1
8
D6
G2
9
G3
D7
10
Outline 20P2N-A
20P2E/F-A
Fig. 26 Pin configuration of built-in PROM version
MITSUBISHI
ELECTRIC
39
MITSUBISHI [ Mitsubishi Group ]
