Analog-Digital Converter - Toshiba TLCS-90 Series Data Book

TOSHIBA
TMP90C840
INTRX interrupt
Acc (- SCBUF
I
if Acc
=
Select code
I
then SCMOD (- - - - 0 - - - - Clear WU to "0".
(Note) x: Don't care
No change
3.9 Analog/Digital Converter
The TMP90C840 incorporates a high-speed and high-precision analogi
digital converter (A/D converter) with six analog input channels that
features f8-bit sequential comparison.
Fig. 3.9
(1)
is a block diagram of A/D converter. The 6-channel analog
input pin (AN5 - ANa) is also used as the input port P5.
Internal Data Bus
AID Converter
Mode Register (ADMOD)
r------- - - - - - - - - - - - - - - - - - - - - - - - ,
I I
I
I
I
ADCH2_0 EOCF ADB ADCS ADS
I
1..-----1-1-
---~~ b~~--lspeedsEart-..J
r--____
f _____
INTAD
AID Converter
Interrupt
Analog
ANS
Controller
AN4
ANO
VREFLr----------~
AGNDLr----------~
Fig. 3.9
(1)
DIA Converter
AID Conversion Result
Register (ADREG)
Block Diagram of A/D Converter
MPU90-125