Z8F042ASJ020EG2156 Datasheet, PDF (140/280 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
125
2
V_REFSEL
Internal Voltage
Reference Generator
V_REF pin
VREFEXT
ADC
Data
Ref Input
13
13 bit
Sigma-Delta
ADC
Analog In -
Analog In +
Buffer Amplifier
-
+
ADC
IRQ
BUFFMODE
Analog Input
Multiplexer
4
ANAIN
Analog Input
Multiplexer
Amplifier tristates
when disabled
-
+
Low-Power Operational
Amplifier
Temp
Sensor
ANA0
ANA1
ANA2
ANA3
ANA4
ANA5
ANA0
ANA1
ANA2
ANA3
ANA4
ANA5
ANA6
ANA7
Figure 19. Analog-to-Digital Converter Block Diagram
Operation
In both SINGLE-ENDED and DIFFERENTIAL modes, the effective output of the ADC is
an 11-bit, signed, two’s complement digital value. In DIFFERENTIAL Mode, the ADC
can output values across the entire 11-bit range, from –1024 to +1023. In SINGLE-
ENDED Mode, the output generally ranges from 0 to +1023, but offset errors can cause
small negative values.
PS022828-0413
PRELIMINARY
Operation