Z8F1233QH020SG Zilog, Z8F1233QH020SG Datasheet - Page 80

• 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

PS025111-1207
PWM SINGLE OUTPUT Mode
In PWM SINGLE OUTPUT mode, the timer outputs a pulse width modulated (PWM)
output signal through a GPIO port pin. The timer input is the system clock. The timer first
counts up to 16-bit PWM match value stored in the timer PWM high and low byte
registers. When the timer count value matches the PWM value, the timer output toggles.
The timer continues counting until it reaches the reload value stored in the timer reload
high and low byte registers. On reaching the reload value, the timer generates an interrupt,
the count value in the timer high and low byte registers is reset to
resumes.
If the TPOL bit in the timer control register is set to 1, the timer output signal begins as a
high (1) and transitions to a low (0) when the timer value matches the PWM value. The
timer output signal returns to a high (1) after the timer reaches the reload value and is reset
to
If the TPOL bit in the timer control register is set to 0, the timer output signal begins as a
low (0) and transitions to a high (1) when the timer value matches the PWM value. The
timer output signal returns to a low (0) after the timer reaches the reload value and is reset
to
Follow the steps below for configuring a timer for PWM SINGLE OUTPUT mode and for
initiating the PWM operation:
1. Write to the timer control register to:
2. Write to the timer high and low byte registers to set the starting count value (typically
3. Write to the PWM high and low byte registers to set the PWM value.
4. Write to the timer reload high and low byte registers to set the reload value (PWM
5. If appropriate, enable the timer interrupt and set the timer interrupt priority by writing
6. Configure the associated GPIO port pin for the timer output alternate function.
7. Write to the timer control register to enable the timer and initiate counting.
0001H
0001H
–
–
–
–
0001H
PWM mode, counting always begins at the reset value of
period). The reload value must be greater than the PWM value.
to the relevant interrupt registers.
Disable the timer
Configure the timer for PWM mode.
Set the prescale value.
Set the initial logic level (high or low) and PWM high/low transition for the timer
output alternate function.
.
.
). This only affects the first pass in PWM mode. After the first timer reset in
Z8 Encore!
0001H
Product Specification
0001H
.
®
and counting
F0830 Series
Timers
70