Z8F1233QH020SG Zilog, Z8F1233QH020SG Datasheet - Page 76

• 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

Operation
PS025111-1207
Timer Operating Modes
The timers are 16-bit up-counters. Minimum time-out delay is set by loading the value
0001H
Maximum time-out delay is set by loading the value
low byte registers and setting the prescale value to 128. If the Timer reaches
timer resets back to
The timers can be configured to operate in the following modes:
ONE-SHOT Mode
In ONE-SHOT mode, the timer counts up to the 16-bit reload value stored in the timer
reload high and low byte registers. The timer input is the system clock. On reaching the
reload value, the timer generates an interrupt and the count value in the timer high and low
byte registers is reset to
Also, if the timer output Alternate function is enabled, the timer output pin changes state
for one system clock cycle (from low to high or from high to low) on timer reload. For the
timer output to make a state change at a ONE-SHOT time-out (rather than a single cycle
pulse), first set the TPOL bit in the timer control register to the start value before enabling
ONE-SHOT mode. After starting the timer, set TPOL to the opposite bit value.
Follow the steps below for configuring a timer for ONE-SHOT mode and for initiating the
count:
1. Write to the timer control register to:
2. Write to the timer high and low byte registers to set the starting count value.
3. Write to the timer reload high and low byte registers to set the reload value.
4. If appropriate, enable the timer interrupt and set the timer interrupt priority by writing
5. If using the timer Output function, configure the associated GPIO port pin for the
6. Write to the timer control register to enable the timer and initiate counting.
–
–
–
–
to the relevant interrupt registers.
timer output Alternate function.
into the timer reload high and low byte registers and setting the prescale value to 1.
Disable the timer
Configure the timer for ONE-SHOT mode
Set the prescale value
Set the initial output level (high or low) if using the timer output Alternate
function
0000H
0001H
and continues counting.
. The timer is automatically disabled and stops counting.
0000H
Z8 Encore!
into the timer reload high and
Product Specification
®
F0830 Series
FFFFH
, the
Timers
66