Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 322

• Manufacturer Part Number: Z8F16800144ZCOG
• Description: KIT DEV FOR Z8F642 MCU 44 PIN
• Manufacturer: Zilog
• Series: Z8 Encore!®r
• Type: MCUr

Specifications of Z8F16800144ZCOG

• Contents: Hardware, Software and Documentation
• For Use With/related Products: Z8F642
• For Use With: 269-4661 - KIT ACC ETHERNET SMART CABLE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4678

Table 170. Oscillator Control0 Register (OSCCTL0)
Peripheral Clock
Oscillator Control Register Definitions
BITS
FIELD
RESET
R/W
ADDR
PS025011-1010
Table 169. Peripheral Clock Source and Usage
Peripheral Clock Source
Secondary Oscillator
Caution:
Oscillator Control0 Register
INTEN
R/W
7
1
The peripheral clock is based on a low-frequency/low-power 32 kHz secondary oscillator
that can be used with an external watch crystal. The peripheral clock is only available for
driving Timer and associated noise filter operation. It is not supported for other
peripherals. The dedicated peripheral clock source allows Timer operation when the
device is in STOP Mode.
Table 169
The Oscillator Control Register (OSCCTL0) enables/disables the various oscillator
circuits, enables/disables the failure detection/recovery circuitry, and selects the primary
oscillator, which becomes the system clock.
The Oscillator Control 0 Register must be unlocked before writing. Writing the two step
sequence
is locked at successful completion of a register write to the OSCCTL0.
It is possible to disable the clock failure detection circuitry as well as all functioning
clock sources. In this case, the Z8 Encore! XP F1680 Series device ceases functioning
and can only be recovered by Power-on reset.
XTLEN
E7H
R/W
summarizes peripheral clock source features and usage.
6
0
followed by
Characteristics
- Optimized for use with a
- Very high Accuracy
- Dedicated XTAL pins
- No external components
32 kHz Watch Crystal
WDTEN
R/W
5
1
18H
P R E L I M I N A R Y
to the Oscillator Control 0 Register unlocks it. The register
POFEN
R/W
4
0
F86H
WDFEN
Required Set-Up
- Unlock and write OSCCTL1 to enable
- Select peripheral clock at Timer clock
R/W
secondary oscillator
source in TxCTL2 register
3
0
Z8 Encore! XP
R/W
2
0
Product Specification
SCKSEL
R/W
1
0
®
Oscillator Control
F1680 Series
R/W
0
0
308