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HD404654 Datasheet, PDF (88/111 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer
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HD404654 Series
Programmable ROM (HD4074654)
The HD4074654 is a ZTAT™ microcomputer with built-in PROM that can be programmed in PROM
mode.
PROM Mode Pin Description
Pin No.
DP-42S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
FP-44A
39
40
41
42
43
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
23
24
MCU Mode
Pin Name
I/O
RD0/COMP0
I
RD1/COMP1
I
TONEC
O
TONER
O
VT ref
I
RE0/VCref
I
TEST
I
OSC1
I
OSC2
O
RESET
I
GND
I
D0
I/O
D1
I/O
D2
I/O
D3
I/O
D4
I/O
D5
I/O
D6
I/O
D7
I/O
D8
I/O
D9
I/O
D12/STOPC
I
D13/INT0
I
R00/INT1
I/O
R10
I/O
R11
I/O
R12
I/O
R13
I/O
PROM Mode
Pin Name
I/O
CE
I
OE
I
VCC
M1
I
TEST
I
VCC
RESET
I
GND
O
O
VCC
VCC
O4
I/O
O5
I/O
O6
I/O
O7
I/O
A13
I
A14
I
A9
I
VPP
M0
I
A5
I
A6
I
A7
I
A8
I
86
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