Z8F041APH020SG2156 ZiLOG, Z8F041APH020SG2156 Datasheet - Page 89

• Manufacturer Part Number: Z8F041APH020SG2156
• Description: 8-bit Microcontrollers - MCU 4K FLASH 1K RAM 128B NVDS
• Manufacturer: ZiLOG

Specifications of Z8F041APH020SG2156

• Rohs: yes
• Core: eZ8
• Processor Series: Z8F041xx
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 4 KB
• Data Ram Size: 1 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 2.7 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: PDIP-20
• Mounting Style: Through Hole
• A/d Bit Size: 10 bit
• A/d Channels Available: 8
• 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

PS022827-1212
it is appropriate to have the Timer Output 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.
Observe the following steps for configuring a timer for ONE-SHOT Mode and 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.
In ONE-SHOT Mode, the system clock always provides the timer input. The timer period
is computed via the following equation:
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
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 initiat-
ing the count:
1. Write to the Timer Control Register to:
ONE-SHOT Mode Time-Out Period s  
–
–
–
–
to the relevant interrupt registers.
Timer 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.
Disable the timer
Configure the timer for CONTINUOUS Mode
P R E L I M I N A R Y
0001H
=
Reload Value Start Value
----------------------------------------------------------------------------------------------------------------- -
System Clock Frequency Hz
and counting resumes. Also, if the Timer
Z8 Encore! XP
–
Product Specification

Prescale
®

F082A Series

Operation
72