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GMS87C1102 Datasheet(PDF) 6 Page - Hynix Semiconductor

Part No. GMS87C1102
Description  CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
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Maker  HYNIX [Hynix Semiconductor]
Homepage  http://www.skhynix.com/ko/index.jsp
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GMS87C1102 Datasheet(HTML) 6 Page - Hynix Semiconductor

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GMS87C1102 / GMS87C1202
HYUNDAI MicroElectronics
6
Oct. 1999 ver 1.0
8. PIN FUNCTION
VDD: Supply voltage.
VSS: Circuit ground.
RESET: Reset the MCU.
XIN: Input to the inverting oscillator amplifier and input to
the internal clock operating circuit.
XOUT: Output from the inverting oscillator amplifier. If
RC Option is used, the oscillator frequency divided by 4
(Xin/4) comes out from Xout pin.
RA0~RA7: RA is an 8-bit, CMOS, bidirectional I/O port.
RA pins can be used as outputs or inputs according to “1”
or “0” written in the Port Direction Register(RAIO).
In addition, RA serves the functions of the various special
features in Table 8-1.
RB0~RB4: RB is a 5-bit, CMOS, bidirectional I/O port.
RB pins can be used as outputs or inputs according to “1”
or “0” written in the Port Direction Register(RBIO).
RB serves the functions of the various following special
features.
RC0~RC1: RC is a 2-bit, CMOS, bidirectional I/O port.
RC pins can be used as outputs or inputs according to “1”
or “0” written in the Port Direction Register(RCIO)
.
Port pin
Alternate function
RA0
RA1
RA2
RA3
RA4
RA5
RA6
RA7
EC0 ( Event Counter Input Source )
AN1 ( Analog Input Port 1 )
AN2 ( Analog Input Port 2 )
AN3 ( Analog Input Port 3 )
AN4 ( Analog Input Port 4 )
AN5 ( Analog Input Port 5 )
AN6 ( Analog Input Port 6 )
AN7 ( Analog Input Port 7 )
Table 8-1 RA Port
Port pin
Alternate function
RB0
RB1
RB2
RB3
RB4
AN0 ( Analog Input Port 0 )
AVref ( External Analog Reference Pin )
BUZ ( Buzzer Driving Output Port )
INT0 ( External Interrupt Input Port 0 )
INT1 ( External Interrupt Input Port 1 )
PWM ( PWM Output )
COMP0 ( Timer0 Compare Output )
Table 8-2 RB Port
PIN NAME
Pin No.
In/Out
Function
VDD
5
-
Supply voltage
VSS
14
-
Circuit ground
RESET
13
I
Reset signal input
XIN
11
I
XOUT
12
O
RA0 (EC0)
17
I/O (Input)
8-bit general I/O ports
External Event Counter input
RA1 (AN1)
18
I/O (Input)
Analog Input Port 1
RA2 (AN2)
19
I/O (Input)
Analog Input Port 2
RA3 (AN3)
20
I/O (Input)
Analog Input Port 3
RA4 (AN4)
1
I/O (Input)
Analog Input Port 4
RA5 (AN1)
2
I/O (Input)
Analog Input Port 5
RA6 (AN1)
3
I/O (Input)
Analog Input Port 6
RA7 (AN7)
4
I/O (Input)
Analog Input Port 7
RB0 (AVref/AN0)
6
I/O (Input)
5-bit general I/O ports
Analog Input Port 0 / Analog Reference
RB1 (INT0)
7
I/O (Input)
External Interrupt Input 0
RB2 (INT1)
8
I/O (Input)
External Interrupt Input 1
RB3 (BUZ)
9
I/O (Output)
Buzzer Driving Output
RB4 (PWM/COMP0)
10
I/O (Output/Output)
PWM Output or Timer Compare Output
RC0
15
I/O
2-bit general I/O ports
RC1
16
I/O
Table 8-3 Pin Description


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