Z8F011ASH020EG2156 ZiLOG, Z8F011ASH020EG2156 Datasheet - Page 92

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Z8F011ASH020EG2156

Manufacturer Part Number
Z8F011ASH020EG2156
Description
8-bit Microcontrollers - MCU 1K FLASH 256B RAM 16B NVDS
Manufacturer
ZiLOG
Datasheet

Specifications of Z8F011ASH020EG2156

Rohs
yes
Core
eZ8
Data Bus Width
8 bit
Maximum Clock Frequency
20 MHz
Program Memory Size
1 KB
Data Ram Size
256 B
On-chip Adc
No
Package / Case
SOIC-20
Mounting Style
SMD/SMT
Interface Type
UART
Maximum Operating Temperature
+ 105 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
17
Number Of Timers
2
Program Memory Type
Flash
Supply Voltage - Max
3.6 V
Supply Voltage - Min
2.7 V
PS025113-1212
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 regis-
ters. 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. Upon 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
Observe the following steps for configuring a timer for PWM SINGLE OUTPUT Mode
and for initiating 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 (typi-
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.
The PWM period is represented by the following equation:
0001H
cally
reset in 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.
0001H
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
.
0001H
.
). This value only affects the first pass in PWM Mode. After the first timer
Z8 Encore!
Product Specification
0001H
0001H
®
F0830 Series
and counting
.
Operation
74

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