Z8F64220100ZDA Zilog, Z8F64220100ZDA Datasheet - Page 74
Manufacturer Part Number
ADAPTER ICE Z8 ENCORE 64K 64LQFP
Specifications of Z8F64220100ZDA
For Use With/related Products
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Table 18. Port A–H Output Control Sub-Registers
AF[7:0]—Port Alternate Function enabled
0 = The port pin is in NORMAL mode and the DDx bit in the Port A–H Data Direction
1 = The alternate function is selected. Port pin operation is controlled by the
The Port A–H Output Control sub-register
Port A–H Control register by writing
bits in the Port A–H Output Control sub-registers to 1 configures the specified port pins
for open-drain operation. These sub-registers affect the pins directly and, as a result, alter-
nate functions are also affected.
POC[7:0]—Port Output Control
These bits function independently of the alternate function bit and disables the drains if set
0 = The drains are enabled for any output mode.
1 = The drain of the associated pin is disabled (open-drain mode).
The Port A–H High Drive Enable sub-register
H Control register by writing
Port A–H High Drive Enable sub-registers to 1 configures the specified port pins for high
current output drive operation. The Port A–H High Drive Enable sub-register affects the
pins directly and, as a result, alternate functions are also affected.
If 03H in Port A
sub-register determines the direction of the pin.
H Output Control Sub-Registers
H High Drive Enable Sub-Registers
H Address Register, accessible through Port A
to the Port A–H Address register. Setting the bits in the
to the Port A–H Address register. Setting the
18) is accessed through the
19) is accessed through the Port A–
Z8 Encore! XP
H Control Register