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HD404054 Datasheet, PDF (78/101 Pages) Hitachi Semiconductor – HMCS400-series microcomputers designed to increase program productivity with large-capacity memory
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HD404054 Series/HD404094 Series
Programmable ROM (HD4074054, HD4074094)
The HD4074054 and HD4074094 are ZTAT™ microcomputers with built-in PROM that can be
programmed in PROM mode.
PROM Mode Pin Description
Pin No.
MCU Mode
DP-42S
FP-44A
Pin Name
I/O
1
39
RD0/COMP0
I
2
40
RD1/COMP1
I
3
41
RD2
I
4
42
RD3
I
5
43
RC0
I
6
1
RE0/VCref
I
7
2
TEST
I
8
3
9
4
10
5
OSC1
I
OSC2
O
RESET
I
11
6
GND
I
12
7
D0
I/O
13
8
D1
I/O
14
9
D2
I/O
15
10
D3
I/O
16
11
D4
I/O*
17
12
D5
I/O*
18
13
D6
I/O*
19
14
D7
I/O*
20
15
D8
I/O
21
16
D9
I/O
22
17
D12/STOPC
I
23
18
D13/INT0
I
24
19
R00/INT1
I/O
25
20
R10
I/O
26
21
R11
I/O
27
23
R12
I/O
Note: I/O: Input/output pin, I: Input pin, O: Output pin
* HD404054 Series: I/O, HD404094 Series: O
PROM Mode
Pin Name
I/O
CE
I
OE
I
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
78
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