SC28L92A1B NXP Semiconductors, SC28L92A1B Datasheet - Page 62

• Manufacturer Part Number: SC28L92A1B
• Description: UART Interface IC UART DUAL W/FIFO
• Manufacturer: NXP Semiconductors
• Type: Dual UARTr

Specifications of SC28L92A1B

• Number Of Channels: 2
• Data Rate: 230.4 Kbps
• Supply Voltage (max): 5 V
• Supply Voltage (min): 3.3 V
• Supply Current: 25 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: PQFP-44
• Description/function: Single-chip CMOS-LSI communications device
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V, 5 V
• Lead Free Status / Rohs Status: Details
• Other names: SC28L92A1B,557

NXP Semiconductors
SC28L92_7
Product data sheet
Fig 17. Clock timing
C/T clock
X1/CLK
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.
Package capacitance approximately 4 pF.
RxC
TxC
24 pF for C
parasitic capacitance
parasitic capacitance
Fig 18. Transmitter external clocks
Fig 19. Receiver external clock
L
t
t
3 pF
3 pF
CTC
t
= 13.5 pF. For the oscillator feedback loop, the capacitors C1 and C2 are in series.
CLK
t
RX
TX
C2
C1
(1 output)
(1 input)
(input)
RxC
RxD
TxC
TxD
TxC
3.6864 MHz
Rev. 07 — 19 December 2007
t
t
CTC
t
CLK
t
RX
3.3 V/5.0 V Dual Universal Asynchronous Receiver/Transmitter
TX
X1
X2
2 pF
4 pF
t
TXD
(1 or 16 clocks)
50 k
to
100 k
SC28L92
1 bit time
t
TCS
CLK
t
RXS
resistor required
for TTL input
t
RXH
V
CC
470
001aae316
001aae315
X1
X2
(must be left open)
SC28L92
© NXP B.V. 2007. All rights reserved.
to UART circuit
001aae314
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