Z8F042AHJ020SC00TR Zilog, Z8F042AHJ020SC00TR Datasheet - Page 147

• Manufacturer Part Number: Z8F042AHJ020SC00TR
• Description: IC ENCORE XP MCU FLASH 4K 28SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F042AHJ020SC00TR

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 23
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Z8F042AHJ020SC00T

Table 75. Comparator Control Register (CMP0)
Comparator Control Register Definitions
BITS
FIELD
RESET
R/W
ADDR
PS022825-0908
Comparator Control Register
INPSEL
R/W
7
0
nop
clr irq0 ; clear any spurious interrupts pending
ei
The Comparator Control Register (CMP0) configures the comparator inputs and sets the
value of the internal voltage reference.
INPSEL—Signal Select for Positive Input
0 = GPIO pin used as positive comparator input
1 = temperature sensor used as positive comparator input
INNSEL—Signal Select for Negative Input
0 = internal reference disabled, GPIO pin used as negative comparator input
1 = internal reference enabled as negative comparator input
REFLVL—Internal Reference Voltage Level (this reference is independent of the ADC
voltage reference). Note that the 8-pin devices contain two additional LSBs for increased
resolution.
For 20-/28-pin devices:
0000 = 0.0 V
0001 = 0.2 V
0010 = 0.4 V
0011 = 0.6 V
0100 = 0.8 V
0101 = 1.0 V (Default)
0110 = 1.2 V
0111 = 1.4 V
1000 = 1.6 V
INNSEL
R/W
6
0
; wait for output to settle
R/W
5
0
R/W
4
1
REFLVL
F90H
R/W
3
0
Z8 Encore! XP
R/W
2
1
Product Specification
Reserved (20-/28-pin)
R/W
REFLVL (8-pin)
1
0
®
F082A Series
Comparator
R/W
0
0
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