Z8F011ASH020EG2156 ZiLOG, Z8F011ASH020EG2156 Datasheet - Page 170

no-image

Z8F011ASH020EG2156

Manufacturer Part Number
Z8F011ASH020EG2156
Description
8-bit Microcontrollers - MCU 1K FLASH 256B RAM 16B NVDS
Manufacturer
ZiLOG
Datasheet

Specifications of Z8F011ASH020EG2156

Rohs
yes
Core
eZ8
Data Bus Width
8 bit
Maximum Clock Frequency
20 MHz
Program Memory Size
1 KB
Data Ram Size
256 B
On-chip Adc
No
Package / Case
SOIC-20
Mounting Style
SMD/SMT
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
PS025113-1212
Clock Source
Internal precision
RC oscillator
External crystal/res-
onator
External RC oscilla-
tor
External clock drive • 0 to 20 MHz
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 have no effect. The values written to
unlock the register must be ordered correctly, but are not necessarily consecutive. It is pos-
sible 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
• ± 4% accuracy when trimmed
• 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
• Accuracy dependent on
• 10 kHz nominal
• ± 40% accuracy; no external compo-
• Low power consumption
crystal or resonator used)
nal components
nal clock source
nents required
Table 98. Oscillator Configuration and Selection
E7H
MHz
followed by
exter-
exter-
18H
. A third write to the OSCCTL Register
Required Setup
• Unlock and write to the Oscillator Con-
• 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 to the Oscillator Con-
trol 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
de-asserted, 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.
trol Register (OSCCTL) to enable and
select oscillator
Z8 Encore!
Product Specification
®
F0830 Series
Operation
152

Related parts for Z8F011ASH020EG2156