GMS81C1404 Datasheet, PDF (77/93 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C1404/GMS81C1408
Pin No.
User Mode
Pin Name
Pin Name
EPROM MODE
Description
1
RA4 (AN4)
A_D4
A12
A4
D4
2
RA5 (AN5)
3
RA6 (AN6)
A_D5
A_D6
Address Input
Data Input/Output
A13
A5
D5
A14
A6
D6
4
RA7 (AN7)
A_D7
A15
A7
D7
5
V_DD
6
RB0 (AVref/AN0)
7
RB1 (INT0)
8
RB2 (INT1)
V_DD
CTL0
CTL1
CTL2
Connect to V_DD (6.0V)
Read/Write Control
Address/Data Control
9~18
RB3~7, RC3~6, RD2
V_DD
Connect to V_DD (6.0V)
19
X_IN
EPROM Enable High Active, Latch Address in falling edge
20
X_OUT
NC
No connection
21
RESET
V_PP
Programming Power (0V, 12.75V)
22
V_SS
V_SS
Connect to V_SS (0V)
23, 24 RC0, 1
V_DD
Connect to V_DD (6.0V)
25
RA0 (EC0)
A_D0
A8
A0
D0
26
RA1 (AN1)
27
RA2 (AN2)
A_D1
A_D2
Address Input
Data Input/Output
A9
A1
D1
A10
A2
D2
28
RA3 (AN3)
A_D3
A11
A3
D3
Table 22-1 Pin Description in EPROM Mode
June. 2001 Ver 1.2
75