SC68C652BIB48,157 NXP Semiconductors, SC68C652BIB48,157 Datasheet - Page 14

• Manufacturer Part Number: SC68C652BIB48,157
• Description: IC UART DUAL 48LQFP
• Manufacturer: NXP Semiconductors

Specifications of SC68C652BIB48,157

• Features: 2 Channels
• Number Of Channels: 2, DUART
• Fifo's: 32 Byte
• Voltage - Supply: 2.5V, 3.3V, 5V
• With Auto Flow Control: Yes
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• Mounting Type: Surface Mount
• Package / Case: 48-LFQFP
• Voltage: 2.25 V ~ 5.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935278766157; SC68C652BIB48; SC68C652BIB48

NXP Semiconductors
SC68C652B_2
Product data sheet
Fig 4.
RXRDYA, RXRDYB
TXRDYA, TXRDYB
Internal loopback mode diagram
D0 to D7
A0 to A3
RESET
R/W
IRQ
CS
MCR[0] DTR, MCR[3] (OP2) and MCR[2] (OP1). Loopback test data is entered into the
transmit holding register via the user data bus interface, D0 to D7. The transmit UART
serializes the data and passes the serial data to the receive UART via the internal
loopback connection. The receive UART converts the serial data back into parallel data
that is then made available at the user data interface D0 to D7. The user optionally
compares the received data to the initial transmitted data for verifying error-free operation
of the UART transmit/receive circuits.
In this mode, the receiver and transmitter interrupts are fully operational. The Modem
Control Interrupts are also operational.
SC68C652B
INTERRUPT
REGISTER
CONTROL
CONTROL
DATA BUS
SELECT
LOGIC
LOGIC
LOGIC
AND
Rev. 02 — 2 November 2009
Dual UART with 32-byte FIFOs and IrDA encoder/decoder
XTAL1
GENERATOR
REGISTERS
REGISTERS
CLOCK AND
BAUD RATE
TRANSMIT
CONTROL
CONTROL
RECEIVE
LOGIC
LOGIC
FLOW
FLOW
FIFO
FIFO
XTAL2
TRANSMIT
REGISTER
REGISTER
RECEIVE
CONTROL
SHIFT
SHIFT
MODEM
LOGIC
ENCODER
DECODER
IR
IR
SC68C652B
002aab326
© NXP B.V. 2009. All rights reserved.
TXA, TXB
RXA, RXB
RTSA, RTSB
CTSA, CTSB
DTRA, DTRB
DSRA, DSRB
(OP1A, OP1B)
RIA, RIB
(OP2A, OP2B)
CDA, CDB
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