Z8F1233QH020SG Zilog, Z8F1233QH020SG Datasheet - Page 109

• Manufacturer Part Number: Z8F1233QH020SG
• Description: IC ENCORE XP MCU FLSH 12K 20QFN
• Manufacturer: Zilog
• Series: Encore!®r

Specifications of Z8F1233QH020SG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 17
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• For Use With: 770-1002 - ISP 4PORT ZILOG Z8 ENCORE! MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Other names: 269-4656

Comparator
Operation
Comparator Control Register Definitions
PS025111-1207
Caution:
Comparator Control Register
The Z8 Encore!
pares two analog input signals. A GPIO (
input. The negative input (
internal reference. The output is available as an interrupt source or can be routed to an
external pin using the GPIO multiplex. The comparator includes the following features:
•
•
•
One of the comparator inputs can be connected to an internal reference, which is a user
selectable reference and is user programmable with 200 mV resolution.
The comparator may be powered down to save supply current. For details see
Control Register 0
di
ld cmp0,r0; load some new configuration
nop
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.
As a result of the propagation delay of the comparator, it is not recommended to enable
the comparator without first disabling interrupts and waiting for the comparator output
to settle. This delay prevents spurious interrupts after comparator enabling. The
following example shows how to safely enable the comparator:
Positive input is connected to a GPIO pin.
Negative input can be connected to either a GPIO pin or a programmable internal
reference.
Output can be either an interrupt source or an output to an external pin.
; wait for output to settle
®
F0830 Series devices feature a general purpose comparator that com-
on page 34.
CINN
) can be taken from either an external GPIO pin or from an
CINP
) pin provides the positive comparator
Z8 Encore!
Product Specification
®
F0830 Series
Power
Comparator
99