Z8F1233QH020SG Zilog, Z8F1233QH020SG Datasheet - Page 163

• 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

Internal Precision Oscillator
Operation
PS025111-1207
The Internal Precision Oscillator (IPO) is designed for use without external components.
You can either manually trim the oscillator for a non-standard frequency or use the
automatic factory trimmed version to achieve a 5.53 MHz frequency with
and 45%~55% duty
Maximum startup time of IPO is 25 µs. IPO features include:
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The internal oscillator is an RC relaxation oscillator with minimized sensitivity to power
supply variation. By using ratio tracking thresholds, the effect of power supply voltage is
cancelled out. The dominant source of oscillator error is the absolute variance of chip level
fabricated components, such as capacitors. An 8-bit trimming register, incorporated into
the design, compensates for absolute variation of oscillator frequency. Once trimmed the
oscillator frequency is stable and does not require subsequent calibration. Trimming was
performed during manufacturing and is not necessary for the user to repeat unless a
frequency other than 5.53 MHz (FAST mode) or 32.8 kHz (SLOW mode) is required.
Power-down this block for minimum system power.
By default, the oscillator is configured through the Flash option bits. However, the user
code can override these trim values as described in
Select one of two frequencies for the oscillator: 5.53 MHz and 32.8 kHz, using the
OSCSEL bits in the
On-chip RC oscillator that does not require external components
Output frequency of either 5.53 MHz or 32.8 kHz (contains both a FAST and a SLOW
mode)
Trimming possible through Flash option bits with user override
Elimination of crystals or ceramic resonators in applications where high timing accuracy
is not required
cycle
Oscillator Control
over the operating temperature and supply voltage of the device.
on page 143.
Trim Bit Address Space
Z8 Encore!
Product Specification
Internal Precision Oscillator
®
± 4%
F0830 Series
on page 122.
accuracy
153