Z8F0823PJ005SG Zilog, Z8F0823PJ005SG Datasheet - Page 171

• Manufacturer Part Number: Z8F0823PJ005SG
• Description: IC ENCORE MCU FLASH 8K 28-DIP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F0823PJ005SG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 269-4218; Z8F0823PJ005SG

Internal Precision Oscillator
Overview
Operation
PS025203-0405
The Internal Precision Oscillator (IPO) is designed for use without external components.
The user can either manually trim the oscillator for a non-standard frequency or use the
automatic factory-trimmed version to achieve a 5.53MHz frequency. IPO features include:
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The internal oscillator is an RC relaxation oscillator that has had its sensitivity to power
supply variation minimized. 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, incorpo-
rated 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 5.53MHz (fast mode) or 32.8kHz (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: 5.53MHz and 32.8KHz, using the OSC-
SEL bits in the “Oscillator Control” on page 150.
On-chip RC oscillator that does not require external components
Output frequency of either 5.53MHz or 32.8KHz (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.
P R E L I M I N A R Y
“Trim Bit Address Space” on page 136
Z8 Encore!
Product Specification
Internal Precision Oscillator
®
Z8F0823 Series
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