SCC2691 Philips Semiconductors, SCC2691 Datasheet - Page 3

• Manufacturer Part Number: SCC2691
• Description: Universal asynchronous receiver/transmitter UART
• Manufacturer: Philips Semiconductors

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Philips Semiconductors
ORDERING INFORMATION
BLOCK DIAGRAM
1998 Sep 04
24-Pin Plastic Dual In-Line Package (DIP)
28-Pin Plastic Leaded Chip Carrier (PLCC) Package
24-Pin Plastic Small Outline Large (SOL) Package
Universal asynchronous receiver/transmitter (UART)
X1/CLK
RESET
INTRN
D0–D7
A0–A2
WRN
RDN
CEN
X2
3
8
PACKAGES
OPERATION CONTROL
INTERRUPT CONTROL
POWER DOWN
R/W CONTROL
BUS BUFFER
SELECTORS
OSCILLATOR
GENERATOR
BAUD RATE
COUNTER/
ADDRESS
CRYSTAL
DECODE
CLOCK
TIMING
TIMER
LOGIC
CTLR
CTUR
ISR
IMR
ACR
CSR
Figure 2. Block Diagram
CONTROL
TIMING
INTERNAL DATA
3
BUS
T
V
SCC2691AC1N24
SCC2691AC1A28
SCC2691AC1D24
A
COMMERCIAL
CC
= 0 C to +70 C
= +5V +10%,
SHIFT REGISTER
SHIFT REGISTER
HOLDING REG (3)
SELECT LOGIC
HOLDING REG
CHANNEL A
CHANGE OF
OUTPUT PIN
FUNCTION
TRANSMIT
TRANSMIT
DETECTOR
INPUT PIN
RECEIVE
RECEIVE
STATE
MR1, 2
ACR
T
CR
SR
A
V
SCC2691AE1N24
SCC2691AE1A28
CC
= –40 C to +85 C
INDUSTRIAL
= +5V +10%,
Product specification
SCC2691
SD00123
SOT222–1
SOT261-3
SOT137-1
DWG #
TxD
RxD
MPI
MPO
V
GND
CC