Z8F041APH020SG2156 ZiLOG, Z8F041APH020SG2156 Datasheet - Page 211

• 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

PS022827-1212
Clock Source
Internal Precision
RC Oscillator
External Crystal/
Resonator
External RC Oscilla-
tor
External Clock
Drive
Internal Watchdog
Timer Oscillator
Caution:
OSC Control Register Unlocking/Locking
To write the Oscillator Control Register, unlock it by making two writes to the OSCCTL
Register with the values
changes the value of the actual register and returns the register to a locked state. Any other
sequence of Oscillator Control Register writes has no effect. The values written to unlock
the register must be ordered correctly, but are not necessarily consecutive. It is possible to
write to or read from other registers within the unlocking/locking operation.
Unintentional accesses to the Oscillator Control Register can actually stop the chip by
switching to a nonfunctioning oscillator. To prevent this condition, the oscillator control
block employs a register unlocking/locking scheme.
Characteristics
• 32.8 kHz or 5.53 MHz
• High accuracy
• No external components required
• 32 kHz to 20 MHz
• Very high accuracy (dependent on
• Requires external components
• 32 kHz to 4 MHz
• Accuracy dependent on external com-
• 0 to 20 MHz
• Accuracy dependent on external clock
• 10 kHz nominal
• Low accuracy; no external compo-
• Very low power consumption
crystal or resonator used)
ponents
source
nents required
Table 112. Oscillator Configuration and Selection
E7H
P R E L I M I N A R Y
followed by
18H
. A third write to the OSCCTL Register
Required Setup
• Unlock and write Oscillator Control
• Configure Flash option bits for correct
• Unlock and write OSCCTL to enable
• Configure Flash option bits for correct
• Unlock and write OSCCTL to enable
• Write GPIO registers to configure PB3
• Unlock and write OSCCTL to select
• Apply external clock signal to GPIO
• Enable WDT if not enabled and wait
• Unlock and write Oscillator Control
Register (OSCCTL) to enable and
select oscillator at either 5.53 MHz or
32.8 kHz
external oscillator mode
crystal oscillator, wait for it to stabilize
and select as system clock (if the
XTLDIS option bit has been deas-
serted, no waiting is required)
external oscillator mode
crystal oscillator and select as system
clock
pin for external clock function
external system clock
until WDT Oscillator is operating
Register (OSCCTL) to enable and
select oscillator
Z8 Encore! XP
Product Specification
®
F082A Series
Operation
194