Z8F1233QH020SG Zilog, Z8F1233QH020SG Datasheet - Page 77

• 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
In ONE-SHOT mode, the system clock always provides the timer input. The timer period
is given by 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. On reaching the
reload value, the timer generates an interrupt, the count value in the timer high and low
byte registers is reset to
Alternate function is enabled, the timer output pin changes state (from low to high or from
high to low) at timer reload.
Follow the steps below for configuring a timer for CONTINUOUS 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 (usually
3. Write to the timer reload high and low byte registers to set the reload value.
4. Enable the timer interrupt (if appropriate) and set the timer interrupt priority by
5. Configure the associated GPIO port pin (if using the timer output function) for the
6. Write to the timer control register to enable the timer and initiate counting.
In CONTINUOUS mode, the system clock always provides the timer input. The timer
period is given by the following equation:
If an initial starting value other than
registers, use the ONE-SHOT mode equation to determine the first time-out period.
Continuous Mode Time-Out Period (s)
One-Shot Mode Time-Out Period (s)
–
–
–
–
0001H). This action only affects the first pass in CONTINUOUS mode. After the first
timer reload in CONTINUOUS mode, counting always begins at the reset value of
0001H
writing to the relevant interrupt registers.
timer output alternate function.
Disable the timer
Configure the timer for CONTINUOUS mode
Set the prescale value
If using the timer output Alternate function, set the initial output level (high or
low)
.
0001H
and the counting resumes. Also, if the timer output
0001H
=
(
----------------------------------------------------------------------------------------------------- -
=
Reload Value Start Value
is loaded into the timer high and low byte
--------------------------------------------------------------------------- -
System Clock Frequency (Hz)
System Clock Frequency (Hz)
Reload Value Prescale
–
Z8 Encore!
×
Product Specification
)
×
®
Prescale
F0830 Series
Timers
67