R8830 查看數據表（PDF） - RDC Semiconductor

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R8830

16-Bit RISC Microcontroller User’s Manual

RDC Semiconductor 

RDC®

RISC DSP Controller

R8830

4. Pin Description

Pin

No.(PQFP)

15, 21, 38,

61, 67, 92

12, 18, 41, 42

64, 70, 89

Symbol

VCC

GND

Type

Input

Input

Description

System power: +5 volt power supply.

System ground.

Reset input. When RST is asserted, the CPU immediately

71

RST

Input* terminate all operation, clears the internal registers & logic,

and the address transfers to the reset address FFFF0h.

13

X1

Input Input to the oscillator amplifier.

14

X2

Output Output from the inverting oscillator amplifier.

Clock output A. The CLKOUTA operation is the same as

16

CLKOUTA

Output crystal input frequency (X1). CLKOUTA remains active during

reset and bus hold conditions.

Clock output B. The CLKOUTB operation is the same as

17

CLKOUTB

Output crystal input frequency (X1). CLKOUTB remains active

during reset and bus hold conditions.

Asynchronous Serial Port Interface

1

RXD0/PIO23

Input/Output

Receive data for asynchronous serial port 0. This pin receives

asynchronous serial data.

Tranmit data for asynchronous serial port 0. This pin

2

TXD0/PIO22

Output/Input transmits asynchronous serial data from the UART of the

microcontrolles.

Ready to Send/Ready to Receive signal for asynchronous

serial port 0. when the RTS0 bit in AUXCON register is set

3

RTS0 / RTR0 /PIO20 Output/Input and FC bit in the serial port 0 register is set the RTS0 signal

is enabled. Other the RTS0 bit is cleared and FC bit is set

the RTR0 signal is enabled.

Clear to Send/Enable Receiver Request signal for

asyncgronous serial port 0. when ENRX0 bit in the

AUXCON register is cleared and the FC bit in the serial port

100

CTS0 / ENRX0 /PIO21 Input/Output 0 control register is set the CTS0 signal is enabled.

Otherwise when ENRX0 bit is set and the FC bit is set the

ENRX0 signal is enabled.

Tranmit data for asynchronous serial port 0. This pin

98

TXD1/PIO27

Output/Input transmits asynchronous serial data from the UART of the

microcontrolles.

99

RXD1/PIO28

Input/Output

Receive data for asynchronous serial port 0. This pin receives

asynchronous serial data.

Ready to Send/Ready to Receive signal for asynchronous

serial port 1. when the RTS1bit in AUXCON register is set

62

PCS3 / RTS1/ RTR1

Output/Input and FC bit in the serial port 1 register is set the RTS1signal

is enabled. otherwise the RTS1bit is cleared and FC bit is set

the RTR1signal is enabled.

RDC Semiconductor Co.

Subject to change without notice

8

Rev:1.4

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