PC87307VUL National Semiconductor, PC87307VUL Datasheet - Page 210

• Manufacturer Part Number: PC87307VUL
• Description: PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
• Manufacturer: National Semiconductor

www.national.com
13.3.20 GPIO Write Timing
13.3.21 RTC Timing
t
t
t
t
A15-0
IOW
D7-0
GPIO17-10
GPIO27-20
RW
RCI
RCL
VMR
Symbol
a. Not tested. Guaranteed by design.
Symbol
t
WGO
a. Refer to “Microprocessor Interface Timing” on page 193 for read timing.
IRQ
MR
RD
IOR to IRQ TRI-STATE
MR to IRQ TRI-STATE
MR High Time
V
V
MR
CC
CC
(4.5V) to MR
Parameter
Write Data to GPIO Update
Parameter
a
FIGURE 13-28. GPIO Write Timing Diagram
FIGURE 13-30. Master Reset (MR) Timing
a
a
Previous State
FIGURE 13-29. IRQ Release Delay
t
VMR
TABLE 13-57. GPIO Write Timing
TABLE 13-58. RTC Timing
Valid
Device Description
t
RW
210
Valid
Test Conditions
Min
t
RCI
t
WGO
t
RCL
300
Max
Min
100
10
a
Valid
Max
36
25
nsec
Unit
msec
nsec
nsec
Unit
sec