参数资料
型号: 935056380512
厂商: NXP SEMICONDUCTORS
元件分类: 微控制器/微处理器
英文描述: 8 CHANNEL(S), 115.2K bps, SERIAL COMM CONTROLLER, PQCC84
封装: PEDESTAL, PLASTIC, MO-047AF, SOT-189-3, LCC-84
文件页数: 16/29页
文件大小: 167K
代理商: 935056380512
Philips Semiconductors
Product specification
SCC2698B
Enhanced octal universal asynchronous
receiver/transmitter (Octal UART)
2000 Jan 31
23
X1/CLK
CTCLK
RxC
TxC
tCLK
tCTC
tRx
tTx
tCLK
tCTC
tRx
tTx
+5V
1K
X1
X2
C1 = C2 = 24pF FOR CL = 20PF
X1
X2
3.6864MHz
3pF
4pF
50 TO
150 K
TO INTERNAL CLOCK DRIVERS
SCC2698B
NOTE:
C1 AND C2 SHOULD BE BASED ON MANUFACTURER’S SPECIFICATION. PARASITIC CAPACITANCE SHOULD
BE INCLUDED WITH C1 AND C2. R1 IS ONLY REQUIRED IF U1 WILL NOT DRIVE TO X1 INPUT LEVELS
TYPICAL CRYSTAL SPECIFICATION
FREQUENCY:
2 – 4MHZ
LOAD CAPACITANCE (CL):
12 – 32pF
TYPE OF OPERATION:
PARALLEL RESONANT, FUNDAMENTAL MODE
NC
R1
U1
SD00137
RESISTOR REQUIRED
WHEN U1 IS A TTL DEVICE
Figure 9. Clock Timing
tTXD
tTCS
1 BIT TIME
(1 OR 16 CLOCKS)
TxD
TxC
(INPUT)
TxC
(1X OUTPUT)
SD00146
Figure 10. Transmit Timing
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