GMS81C2020/GMS81C2120
Hyundai Micro Electronics
42PDIP
RA
R53
R54
R55
R56
R57
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
R34
R33
R32
R31
R30
R27
R26
R25
R24
R23
R22
R21
R20
R07
R06
R05
R04
R03
R02
R01
R00
CTL3
CTL2
CTL1
CTL0
VPP
EPROM Enable
RESETB
XI
XO
VSS
AVSS
R60
R61
R62
R63
R64
R65
R66
R67
AVDD
VDD
VSS
A_D0
A_D1
A_D2
A_D3
A_D4
A_D5
A_D6
A_D7
V
DD
Figure 24-3 Pin Assignmen (42SDIP)t
User Mode
Pin Name
EPROM MODE
Description
Pin No.
Pin Name
P_Vb
D_Ab
PGM8
PGM4
2
3
R53
R54
R55
R56
CTL3
Read/Write Control
CTL2
CTL1
CTL0
VPP
Address/Data Control
4
Write 8Bytes Control
5
Write 4Bytes Control
7
RESETB
XI
Programming Power (0V, 12.75V)
8
EPROM Enable High Active, Latch Address in falling edge
9
XO
NC
No connection
Connect to VSS (0V)
10
12
13
14
15
16
17
18
19
21
VSS
R60
R61
R62
R63
R64
R65
R66
R67
VDD
VSS
A_D0
A_D1
A_D2
A_D3
A_D4
A_D5
A_D6
A_D7
VDD
A8
A0
A1
A2
A3
A4
A5
A6
A7
D0
D1
D2
D3
D4
D5
D6
D7
A9
Address Input
Data Input/Output
A10
A11
A12
A13
A14
A15
Address Input
Data Input/Output
Connect to VDD (6.0V)
Table 24-2 Pin Description in EPROM Mode (GMS81C2120)
86
preliminary
Nov. 1999 Ver 0.0
HYNIX [ HYNIX SEMICONDUCTOR ]
