SCC2681AC1A44-T NXP Semiconductors, SCC2681AC1A44-T Datasheet - Page 7

• Manufacturer Part Number: SCC2681AC1A44-T
• Description: UART Interface IC RPLACMNT FOR SCN2681
• Manufacturer: NXP Semiconductors
• Type: Dual asynchronous receiver/transmitter (DUART)r

Specifications of SCC2681AC1A44-T

• Product Category: UART Interface IC
• Rohs: yes
• Number Of Channels: 2
• Data Rate: 115.2 Kbps
• Supply Voltage - Max: 5.25 V
• Supply Voltage - Min: 4.75 V
• Supply Current: 10 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 40 C
• Package / Case: PLCC-44
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 5 V
• Factory Pack Quantity: 500
• Part # Aliases: SCC2681AC1A44,518

8. Consecutive write operations to the same command register require at least three edges of the X1 clock between writes.
9. This parameter is not applicable to the 28-pin device.
10. Operation to 0 MHz is assured by design. However, operation at low frequencies is not tested and has not been characterized.
Philips Semiconductors
BLOCK DIAGRAM
2004 Apr 06
Dual asynchronous receiver/transmitter (DUART)
X1/CLK
RESET
INTRN
D0–D7
A0–A3
WRN
CEN
RDN
X2
4
8
OPERATION CONTROL
INTERRUPT CONTROL
R/W CONTROL
BUS BUFFER
GENERATOR
SELECTORS
BAUD RATE
COUNTER/
XTAL OSC
ADDRESS
DECODE
CLOCK
TIMING
TIMER
CTUR
CSRB
CTLR
CSRA
IMR
ACR
ISR
Figure 2. Block Diagram
7
SHIFT REGISTER
HOLDING REG (3)
SHIFT REGISTER
SELECT LOGIC
DETECTORS (4)
HOLDING REG
OUTPUT PORT
CHANNEL A
CHANNEL B
(AS ABOVE)
INPUT PORT
CHANGE OF
FUNCTION
TRANSMIT
TRANSMIT
RECEIVE
RECEIVE
MRA1, 2
STATE
OPCR
OPR
CRA
SRA
IPCR
ACR
7
8
SCC2681
SD00085
TxDA
RxDA
TxDB
RxDB
IP0-IP6
OP0-OP7
V
GND
Product data
CC