Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 64

• 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

Architecture
GPIO Alternate Functions
PS025011-1010
System
DATA
Clock
Bus
Data Register
Port Output
Figure 9
ability to accommodate alternate functions and variable port current drive strength.
Many GPIO port pins are used for GPIO and to access the on-chip peripheral functions
like the timers and serial-communication devices. The Port A–E Alternate Function
subregisters configure these pins for either GPIO or alternate function operation. When a
pin is configured for alternate function, control of port-pin direction (input/output) is
passed from Port A–E Data Direction registers to the alternate functions assigned to this
pin.
functions possible with each port pin for every package. The alternate function associated
at a pin is defined through alternate function sets subregisters AFS1 and AFS2.
The crystal oscillator and the 32 kHz secondary oscillator functionalities are not 
controlled by the GPIO block. When the crystal oscillator or the 32 kHz secondary 
oscillator is enabled in the oscillator control block, the GPIO functionality of PA0 and
PA1, or PA2 and PA3, is overridden. In such a case, those pins function as input and 
output for the crystal oscillator.
D
Table 15
Q
displays a simplified block diagram of a GPIO port pin and does not illustrate the
on page 52,
Figure 9. GPIO Port Pin Block Diagram
System
Clock
Port Output Control
Port Data Direction
Table 16
P R E L I M I N A R Y
Data Register
Port Input
Q
on page 54, and
D
Table 17
Q
Z8 Encore! XP
D
on page 57 list the alternate
General-Purpose Input/Output
Schmitt-Trigger
Product Specification
GND
VDD
®
F1680 Series
Port
Pin
50