Product data

HD404818 Series
68
Pin Description in PROM Mode
The HD4074818 and HD407L4818 are ZTAT microcomputers incorporating a PROM. In the PROM
mode, the MCU does not operate and the HD4074818 and HD407L4818 can program the on-chip PROM.
Pin Number MCU Mode PROM Mode Pin Number MCU Mode PROM Mode
FP-
80B
FP-80A
TFP-80 Pin Name I/O Pin Name I/O FP-80B
FP-80A
TFP-80 Pin Name I/O Pin Name I/O
179 D
2
I/O O
2
I/O 28 26 R2
3
I/O A
12
I
280 D
3
I/O O
3
I/O 29 27 R3
0
I/O A
13
I
31 D
4
I/O O
4
I/O 30 28 R3
1
/TIMO I/O A
14
I
42 D
5
I/O O
5
I/O 31 29 R3
2
/INT
0
I/O CE I
53 D
6
I/O O
6
I/O 32 30 R3
3
/INT
1
I/O OE I
64 D
7
I/O O
7
I/O 33 31 SEG1 O
75 D
8
I/O 34 32 SEG2 O
86 D
9
I/O 35 33 SEG3 O
97 D
10
IV
PP
36 34 SEG4 O
10 8 D
11
/VC
ref
IA
9
I 37 35 SEG5 O
11 9 D
12
/COMP
0
I M
0
I 38 36 SEG6 O
12 10 D
13
/COMP
1
I M
1
I 39 37 SEG7 O
13 11 TEST I TEST I 40 38 SEG8 O
14 12 X1 I GND 41 39 SEG9 O
15 13 X2 O 42 40 SEG10 O
16 14 GND GND 43 41 SEG11 O
17 15 R0
0
/SCK I/O A
1
I 44 42 SEG12 O
18 16 R0
1
/SI I/O A
2
I 45 43 SEG13 O
19 17 R0
2
/SO I/O A
3
I 46 44 SEG14 O
20 18 R0
3
I/O A
4
I 47 45 SEG15 O
21 19 R1
0
I/O A
5
I 48 46 SEG16 O
22 20 R1
1
I/O A
6
I 49 47 SEG17 O
23 21 R1
2
I/O A
7
I 50 48 SEG18 O
24 22 R1
3
I/O A
8
I 51 49 SEG19 O
25 23 R2
0
I/O A
0
I 52 50 SEG20 O
26 24 R2
1
I/O A
10
I 53 51 SEG21 O
27 25 R2
2
I/O A
11
I 54 52 SEG22 O