SC26C92C1B,557 NXP Semiconductors, SC26C92C1B,557 Datasheet - Page 24

• Manufacturer Part Number: SC26C92C1B,557
• Description: IC UART DUAL W/FIFO 44PQFP
• Manufacturer: NXP Semiconductors

Specifications of SC26C92C1B,557

• Features: Transceiver
• Number Of Channels: 2, DUART
• Fifo's: 8 Byte
• Voltage - Supply: 5V
• With Auto Flow Control: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 44-MQFP, 44-PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935248790557; SC26C92C1B; SC26C92C1B

Philips Semiconductors
2000 Jan 31
Dual universal asynchronous receiver/transmitter (DUART)
NOTES:
1.
2.
INTRN or OP3-OP7 when used as interrupt outputs.
The test for open-drain outputs is intended to guarantee switching of the output transistor. Measurement of this response is referenced from the midpoint of the switching
signal, V
test environment are pronounced and can greatly affect the resultant measurement.
C1 = C2
C1 and C2 should be chosen according to the crystal manufacturer’s specification.
C1 and C2 values will include any parasitic capacitance of the wiring and X1 X2 pins.
Gain at 3.6864MHz: 9 to 13 dB
Phase at 3.6864MHz: 272 to 276 degrees.
Package capacitance approximately 4pF.
X1/CLK
CTCLK
M
RxC
TxC
, to a point 0.5V above V
24pF FOR C
L
= 20pF
OL
INTERRUPT
INTERRUPT
. This point represents noise margin that assures true switching has occurred. Beyond this level, the effects of external circuitry and
t
t
t
t
CLK
CTC
Rx
Tx
OUTPUT
OUTPUT
3pF
3pF
C2
C1
WRN
RDN
1
1
3.6864MHz
Figure 6. Interrupt Timing
t
t
t
t
Figure 7. Clock Timing
CLK
CTC
Rx
Tx
X1
X2
V
M
24
4pF
2pF
t
IR
V
*NOTE: X2 MUST BE LEFT OPEN.
CLK
M
NOTE:
RESISTOR REQUIRED
FOR TTL INPUT.
SC26C92
50k
to
100k
t
IR
V
OL
V
OL
+0.5V
+0.5V
V
OL
+5V
V
OL
470
Product specification
X2*
TO UART
CIRCUIT
SC26C92
X1
SD00697
SD00136