GMS87C1102 Datasheet, PDF (69/80 Pages) Hynix Semiconductor – CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

HYUNDAI MicroElectronics
GMS87C1102 / GMS87C1202
A_D4
A_D5
A_D6
A_D7
VDD
CTL0
CTL1
CTL2
1
28
A_D3
2
27
A_D2
3
26
A_D1
4
25
A_D0
5
24
6
23
7
22
VSS
8
21
VPP
9
20
NC
10
19
EPROM Enable
Figure 23-3 Pin Assignment
Pin No.
User Mode
Pin Name
Pin Name
EPROM MODE
Description
1
RA4 (AN4)
2
RA5 (AN5)
3
RA6 (AN6)
A_D4
A_D5
A_D6
Address Input
Data Input/Output
A12
A4
D4
A13
A5
D5
A14
A6
D6
4
RA7 (AN7)
A_D7
A15
A7
D7
5
V_DD
V_DD
Connect to V_DD (6.0V)
6
RB0 (AVref/AN0)
7
RB1 (BUZ)
8
RB2 (INT0)
CTL0
CTL1
CTL2
Read/Write Control
Address/Data Control
9
RB3 (INT1)
V_DD
Connect to V_DD (6.0V)
10
RB4 (PWM/COMP)
V_DD
Connect to V_DD (6.0V)
11
X_IN
EPROM Enable High Active, Latch Address in falling edge
12
X_OUT
NC
No connection
13
RESET
V_PP
Programming Power (0V, 12.75V)
14
V_SS
V_SS
Connect to V_SS (0V)
15,16 RC0, 1
V_DD
Connect to V_DD (6.0V)
17
RA0 (EC0)
A_D0
A8
A0
D0
18
RA1 (AN1)
19
RA2 (AN2)
A_D1
A_D2
Address Input
Data Input/Output
A9
A1
D1
A10
A2
D2
20
RA3 (AN3)
A_D3
A11
A3
D3
Table 23-2 Pin Description in EPROM Mode
Oct. 1999 ver 1.0
69