Z8F011ASH020EG2156 ZiLOG, Z8F011ASH020EG2156 Datasheet - Page 88

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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
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
value.
Observe the following steps for configuring a timer for ONE-SHOT Mode and for initiat-
ing 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 timer
6. Write to the Timer Control Register to enable the timer and initiate counting.
In ONE-SHOT Mode, the system clock always provides the timer input. The timer period
is calculated with the following equation:
One-Shot Mode Time-Out Period (s)
CONTINUOUS Mode
In CONTINUOUS 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. Upon
reaching the reload value, the timer generates an interrupt, the count value in the Timer
High and Low Byte registers is reset to
the timer output alternate function is enabled, the timer output pin changes state (from
Low to High or from High to Low) at timer reload.
Observe the following steps for configuring a timer for CONTINUOUS Mode and for ini-
tiating the count:
1. Write to the Timer Control Register to:
to the relevant interrupt registers.
output alternate function.
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 func-
tion
=
0001H
------------------------------------------------------------------------------------------------ -
Reload Value Start Value
System Clock Frequency (Hz)
and the counting resumes. Additionally, if
Z8 Encore!
TPOL
Product Specification
 Prescale
to the opposite bit
®
F0830 Series
Operation
70

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