IS80LV52 Datasheet, PDF (28/48 Pages) Integrated Silicon Solution, Inc – CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER

IS80LV52
IS80LV32
ISSI ^®
TIMER 1
OVERFLOW
TIMER 2
OVERFLOW
WRITE
TO
2
SBUF
SMOD
=0
SMOD
=1
"0"
"1"
TCLK
16
"0"
"1"
RCLK
SAMPLE
1-TO-0
TRANSITION
DETECTOR
RXD
IS80LV52/32 INTERNAL BUS
TB8
DSQ
CL
SBUF
ZERO DETECTOR
START
SHIFT _DATA
TX CONTROL
RX CLOCK _TI
SEND
SERIAL
PORT
INTERRUPT
16
RX CLOCK RI
START RX CONTROL
LOAD
SBUF
SHIFT
1FFH
BIT
DETECTOR
INPUT SHIFT REG.
(9 BITS)
LOAD
SBUF
SHIFT
TXD
READ
SBUF
SBUF
TX
CLOCK
IS80LV52/32 INTERNAL BUS
WRITE TO SBUF
SEND
DATA
SHIFT
TXD
TI
S1P1
START
BIT
D0
D1
D2
D3
D4
D5
D6
D7
TB8
STOP BIT
STOP BIT GEN
TRANSMIT
RX
CLOCK
16 RESET
RXD
START
BIT D0
D1
D2
D3
D4
D5
D6
D7
RB8 STOP
BIT
RECEIVE ^{BIT DETECTOR SAMPLE TIMES}
SHIFT
RI
Figure 18. Serial Port Mode 3
28
Integrated Silicon Solution, Inc. — 1-800-379-4774
ADVANCE INFORMATION MC019-0A
10/01/98