SCC68692C1F40 PHILIPS [NXP Semiconductors], SCC68692C1F40 Datasheet - Page 23
SCC68692C1F40
Manufacturer Part Number
SCC68692C1F40
Description
Dual asynchronous receiver/transmitter DUART
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.SCC68692C1F40.pdf
(30 pages)
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Philips Semiconductors
1998 Sep 04
Dual asynchronous receiver/transmitter (DUART)
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
X1/CLK
CTCLK
RxC
TxC
C1 = C2 = 24pF FOR C
(1X OUTPUT)
(INPUT)
t
t
FREQUENCY:
LOAD CAPACITANCE (C
TYPE OF OPERATION:
CLK
CTC
t
t
Rx
TxC
TxC
Tx
3.6864MHz
L
= 20PF
TxD
L
TYPICAL CRYSTAL SPECIFICATION
):
X1
X2
Figure 10. Transit Timing
Figure 9. Clock Timing
t
TXD
t
t
(1 OR 16 CLOCKS)
CLK
CTC
t
t
Rx
Tx
1 BIT TIME
2 – 4MHZ
12 – 32pF
PARALLEL RESONANT, FUNDAMENTAL MODE
t
TCS
SCC2698B
23
4pF
3pF
50 TO
150 K
RESISTOR REQUIRED
WHEN U1 IS A TTL DEVICE
U1
TO INTERNAL CLOCK DRIVERS
SD00146
+5V
1K
R1
NC
SCC68692
Product specification
SD00137
X1
X2
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