Z8F0113HJ005EG Datasheet, PDF (65/245 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F0823 Series
Product Specification
50
Port A–C Input Data Registers
Reading from the Port A–C Input Data registers (Table 30) returns the sampled values
from the corresponding port pins. The Port A–C Input Data registers are read-only. The
value returned for any unused ports is 0. Unused ports include those missing on the 8- and
28-pin packages, as well as those missing on the ADC-enabled 28-pin packages.
Table 30. Port A–C Input Data Registers (PxIN)
Bit
Field
RESET
R/W
Address
7
PIN7
X
R
6
PIN6
X
R
5
PIN5
X
R
4
3
PIN4
PIN3
X
X
R
R
FD2H, FD6H, FDAH
2
PIN2
X
R
1
PIN1
X
R
0
PIN0
X
R
Bit
Description
[7:0]
PxIN
Port Input Data
Sampled data from the corresponding port pin input.
0 = Input data is logical 0 (Low).
1 = Input data is logical 1 (High).
Note: x indicates the specific GPIO port pin number (7–0).
PS024315-1011
PRELIMINARY
GPIO Control Register Definitions