Z8F041APH020SG2156 ZiLOG, Z8F041APH020SG2156 Datasheet - Page 210

• 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

Oscillator Control
PS022827-1212
Operation
System Clock Selection
The Z8 Encore! XP F082A Series devices uses five possible clocking schemes, each user-
selectable:
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•
•
•
•
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In addition, Z8 Encore! XP F082A Series devices contain clock failure detection and
recovery circuitry, allowing continued operation despite a failure of the system clock
oscillator.
This chapter discusses the logic used to select the system clock and handle primary oscil-
lator failures.
The oscillator control block selects from the available clocks. Table 112 details each clock
source and its usage.
Internal precision trimmed RC oscillator (IPO)
On-chip oscillator using off-chip crystal or resonator
On-chip oscillator using external RC network
External clock drive
On-chip low power Watchdog Timer oscillator
Clock failure detection circuitry
P R E L I M I N A R Y
Z8 Encore! XP
Product Specification
®
Oscillator Control
F082A Series
193