SC28L91 Philips Semiconductors, SC28L91 Datasheet - Page 6

• Manufacturer Part Number: SC28L91
• Description: 3.3V-5.0V Universal Asynchronous Receiver/Transmitter (UART)
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2000 Sep 22
3.3V–5.0V Universal Asynchronous
Receiver/Transmitter (UART)
RESET
X1/CLK
INTRN
D0–D7
A0–A3
WRN
CEN
RDN
X2
4
8
OPERATION CONTROL
INTERRUPT CONTROL
R/W CONTROL
GENERATOR
SELECTORS
BUS BUFFER
BAUD RATE
COUNTER/
XTAL OSC
ADDRESS
DECODE
TIMING
CLOCK
TIMER
CSR
ACR
CTU
CTL
IMR
ISR
GP
Figure 1. Block Diagram (80XXX mode)
6
16 BYTE TRANSMIT
WATCH DOG TIMER
16 BYTE RECEIVE
SHIFT REGISTER
DATA CHANNEL
SELECT LOGIC
DETECTORS (4)
RECEIVE SHIFT
OUTPUT PORT
INPUT PORT
CHANGE OF
TRANSMIT
FUNCTION
REGISTER
MRA0, 1, 2
STATE
OPCR
FIFO
FIFO
IPCR
ACR
OPR
CRA
SRA
7
8
Product specification
SC28L91
SD00702
TxDA
RxDA
IP0-IP6
OP0-OP7
V
V
CC
SS