Z8F0813HJ005EG Zilog, Z8F0813HJ005EG Datasheet - Page 167

• Manufacturer Part Number: Z8F0813HJ005EG
• Description: IC Z8 ENCORE MCU FLASH 8K 28SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F0813HJ005EG

• 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: 24
• 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
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Other names: 269-4182; Z8F0813HJ005EG

Oscillator Control
Overview
Operation
PS025203-0405
Clock Source
Internal Precision
RC Oscillator
System Clock Selection
The Z8 Encore!
user-selectable:
•
•
•
In addition, Z8 Encore!
recovery circuitry, allowing continued operation despite a failure of the primary oscillator.
This chapter discusses the logic used to select the system clock and handle primary oscil-
lator failures. A description of the specific operation of each oscillator is outlined else-
where in this document. The detailed description of the Watch-Dog Timer Oscillator starts
on page 81, the Internal Precision Oscillator description begins on page 154 of this docu-
ment.
The oscillator control block selects from the available clocks. Table 95 details each clock
source and its usage.
On-chip precision trimmed RC oscillator
External clock drive
On-chip low precision Watch-Dog Timer oscillator
Characteristics
• 32.8KHz or 5.53MHz
• ± 4% accuracy when trimmed
• No external components required
Table 95. Oscillator Configuration and Selection
®
Z8F0823 Series devices uses three possible clocking schemes, each
®
Z8F0823 Series devices contain clock failure detection and
P R E L I M I N A R Y
Required Setup
• Unlock and write Oscillator Control
Register (OSCCTL) to enable and
select oscillator at either 5.53MHz or
32.8KHz
Z8 Encore!
Product Specification
®
Z8F0823 Series
Oscillator Control
150