參數(shù)資料
型號(hào): SC68C94A1A
廠(chǎng)商: NXP SEMICONDUCTORS
元件分類(lèi): 微控制器/微處理器
英文描述: nullQuad universal asynchronous receiver/transmitter QUART
中文描述: 4 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PQCC52
封裝: PLASTIC, SOT-238-3, LCC-52
文件頁(yè)數(shù): 3/33頁(yè)
文件大小: 215K
代理商: SC68C94A1A
Philips Semiconductors
Product specification
SC68C94
Quad universal asynchronous receiver/transmitter (QUART)
1995 May 1
3
BLOCK DIAGRAM
8
D0–D7
RDN
WRN
CEN
A0–A5
RESET
X1/CLK
X2
6
BUS BUFFER
OPERATION CONTROL
ADDRESS
DECODE
R/W CONTROL
TIMING
CHANNEL A
MR 0, 1, 2
CR
SR
CSR Rx
CSR Tx
INPUT PORT
OUTPUT PORT
OPCR
CRYSTAL
OSCILLATOR
POWER UP-DOWN
LOGIC
SAME AS
DUART AB
8 BYTE TRANSMIT
FIFO
TRANSMIT SHIFT
REGISTER
8 BYTE
RECEIVE FIFO
RECEIVE SHIFT
REGISTER
CHANGE-OF-
STATE
DETECTORS (4)
IPCR
ACR
FUNCTION SELECT
LOGIC
CHANNEL B
(AS ABOVE)
TIMING
CLOCK
SELECTORS
COUNTER/
TIMER
ACR
CTUR
CTLR
INTERRUPT CONTROL
IMR
ISR
INTERNAL DATA
BUS
TxDA
RxDA
TxDB
RxDB
1:0
4
TIMING
CONTROL
DACKN
DUART CD
TXDC
TXDD
RXDC
RXDD
I/O[3:0]C
I/O[3:0]D
1:0
I/O[3:0]B
I/O[3:0]A
V
CC
V
SS1
V
SS2
V
SS3
V
SS4
BAUD RATE
GENERATOR
DUART AB
LOGIC
GLOBAL
REGISTERS
IRQN
IACKN
INTERRUPT ARBITRATION
8
DUART
COMMON
AB
18
4
4
4
÷
2
SD00180
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