IS80LV51 Datasheet, PDF (22/43 Pages) Integrated Silicon Solution, Inc – CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER

IS80LV51
IS80LV31
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
IS80LV51/31 INTERNAL BUS
TB8
DSQ
CL
SBUF
ZERO DETECTOR
START
SHIFT _DATA
TX CONTROL
RX CLOCK _TI
SEND
SERIAL
PORT
16
INTERRUPT
RX CLOCK RI
START RX CONTROL
LOAD
SBUF
SHIFT
1FFH
BIT
DETECTOR
INPUT SHIFT REG.
(9 BITS)
LOAD
SBUF
SHIFT
TXD
READ
SBUF
SBUF
IS80LV51/31 INTERNAL BUS
TX CLOCK
WRITE TO SBUF
SEND
DATA
SHIFT
TXD
TI
S1P1
START
BIT
D0
D1
D2
D3
D4
D5
D6
D7
STOP BIT
RX
CLOCK
16 RESET
RXD
START
BIT
D0
D1
D2
D3
D4
D5
D6
D7 _{STOP BIT}
RECEIVE
BIT DETECTOR SAMPLE TIMES
SHIFT
RI
TRANSMIT
Figure 13. Serial Port Mode 1
22
Integrated Silicon Solution, Inc.
ADVANCE INFORMATION MC018-0A
10/01/98