z8f1621 ZiLOG Semiconductor, z8f1621 Datasheet - Page 242

• Manufacturer Part Number: z8f1621
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

PS019921-0308
Read on Data Bus
General-Purpose I/O Port Input Data Sample Timing
GPIO Data
Input Value
GPIO Input
Data Latch
GPIO Pin
System
Clock
Figure 49
input timing.
Table 114. GPIO Port Input Timing
Parameter
T
T
T
S_PORT
H_PORT
SMR
displays timing of the GPIO Port input sampling.
Abbreviation
Port Input Transition to XIN Fall Setup Time
(Not pictured)
XIN Fall to Port Input Transition Hold Time
(Not pictured)
GPIO Port Pin Pulse Width to Insure Stop Mode
Recovery
(for GPIO Port Pins enabled as SMR sources)
Figure 49. Port Input Sample Timing
Changes to 0
Port Value
Into Port Input
Data Register
0 Latched
TCLK
Z8 Encore! XP
Table 114
GPIO Data Register
Value 0 Read
Product Specification
by eZ8 CPU
Electrical Characteristics
lists the GPIO port
1 µs
Min
®
5
6
Delay (ns)
F64XX Series
Max
–
–
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