TLC532A Datasheet, PDF (4/10 Pages) Texas Instruments – LinCMOSE 8-BIT ANALOG-TO-DIGITAL PERIPHERALS WITH 5 ANALOG AND 6 DUAL-PURPOSE INPUTS

typical operating sequence
CLOCK
1
2
3
1
2
3
4
5
6
289 290
twL(reset)
R
tsu(A)
R/W
Don’t Care
Start Conversion Cycle If SC Bit Is Logic One (High)
Write Cycle
tsu(A)
Read Cycle
tsu(CS)
CS
Don’t Care
tsu(A)
RS
Don’t Care
tsu(CS)
tsu(A)
Don’t Care
tsu(A)
tsu(A)
tsu(A)
Don’t Care
Write
Cycle
Don’t Care
Don’t Care
tsu(bus)
tsu(bus)
Don’t Care
ten
ten
ten
ten
ten
ten
ten
ten
ten
tsu(bus)
tsu(bus)
DATA
BUS
= HI-Z States
MS
Byte
HI-Z
State
(see Note A)
LS
Byte
MS
Byte
HI-Z
State
(see Note B)
LS LS
LS LS
Byte Byte Byte Byte
(see Note C) (see Note C)
(see Note D)
(see Note E)
MS LS MS LS
Byte Byte Byte Byte
(see Note F)
(see Note A)
NOTES: A. This is a 16-bit input instruction from the microprocessor being sent to the control data register.
B. This is the 2-byte (16-bit) content of the digital data register being sent to the microprocessor.
C. This is the LS byte (8-bit) content of the analog conversion data register being sent to the microprocessor.
D. This is the LS byte (8-bit) content of the digital data register being sent to the microprocessor.
E. These are MS byte (8-bit), LS byte (8-bit), and LS byte (8-bit) content of the analog conversion data register or digital data register being sent to the microprocessor.
F. This is the 2-byte (16-bit) content of the analog conversion data register being sent to the microprocessor.