Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 78

• 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 21. Port A–E Data Direction Subregisters (PxDD)
Table 22. Port A–E Alternate Function Subregisters (PxAF)
BITS
FIELD
RESET
R/W
ADDR
BITS
FIELD
RESET
R/W
ADDR
PS025011-1010
Caution:
Port A
DD7
R/W
AF7
If 01H in Port A–E Address Register, accessible through the Port A–E Control Register
If 02H in Port A–D Address Register, accessible through the Port A–E Control Register
7
1
7
DD[7:0]—Data Direction
These bits control the direction of the associated port pin. Port Alternate Function 
operation overrides the Data Direction register setting. 
0 = Output. Data in the Port A–E Output Data register is driven onto the port pin.
1 = Input. The port pin is sampled and the value written into the Port A–E Input Data 
The Port A–E Alternate Function subregister (see
Port A–E Control register by writing
Alternate Function subregisters enable the alternate function selection on pins. If disabled,
pins functions as GPIO. If enabled, select one of the four alternate functions using
Alternate Function set subregisters 1 and 2 as described in
Set 1 Subregisters
67
Functions
AF[7:0]—Port Alternate Function enabled
0 = The port pin is in NORMAL mode and the DDx bit in the Port A–E Data Direction 
–
E Alternate Function Subregisters
.
Do not enable alternate functions for GPIO port pins for which there is no associated
alternate function. Failure to follow this guideline results in unpredictable operation.
To determine the alternate function associated with each port pin, see
Register. The output driver is tristated.
subregister determines the direction of the pin.
DD6
R/W
AF6
on page 50.
6
1
6
on page 67 and
00H (Ports A–C); 01H (Port D); 00H (Port E);
DD5
R/W
AF5
5
1
5
P R E L I M I N A R Y
DD4
R/W
Port A–E Alternate Function Set 2 Subregisters
AF4
4
1
4
02H
R/W
to the Port A–E Address register. The Port A–E
DD3
R/W
AF3
3
1
3
Table
Z8 Encore! XP
22) is accessed through the 
DD2
R/W
AF2
Port A–E Alternate Function
2
1
2
General-Purpose Input/Output
Product Specification
DD1
R/W
AF1
1
1
1
®
GPIO Alternate
F1680 Series
on page
DD0
R/W
AF0
0
1
0
64