SNAD02C Datasheet, PDF (8/27 Pages) SONiX Technology Company – 8-CHANNEL 10-BIT ADC

SNAD02C
8-CHANNEL 10-BIT ADC
Name
Function
PH Set the pull-up resistor of the channel in digital input mode. 1:ON, 0:OFF.
PL Set the pull-down resistor of the channel in digital input mode.
“1”: ON, “0”: OFF.
RF, MB Set the reference source (from internal bandgap or “REF” pin)
RF=0, MB=1: reference voltage from “REF” pin
RF=1, MB=0: reference voltage from internal bandgap
Table-3
Note:
1. The condition of both PH=1 and PL=1 is prohibited.
2. Pull-up and pull-down resistors are not activated while the corresponding channel is set as
analog input mode.
3. Before into power down mode, the “RF” and “MB” register must set up “0”, otherwise the standby
current will more than 1uA.
6.4. ADC Read Timing
START
CLK
ADC Reading
DIO
HiZ
CM2 CM1 CM0 ID2 ID1 ID0 X
X D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Port Input
Port Output
Figure-6 The timing diagram of ADC reading
Version: 1.3
8
July 31, 2003