w83977f Winbond Electronics Corp America, w83977f Datasheet - Page 17

• Manufacturer Part Number: w83977f
• Description: Plug & Play 1.0a Compliant
• Manufacturer: Winbond Electronics Corp America

1. PIN DESCRIPTION
Note: Please refer to Section 11.2 DC CHARACTERISTICS for details.
I/O6t
I/O8t
I/O8
I/O12t
I/O12
I/O16u
I/OD16u - CMOS level bi-directional pin open drain output with 16 mA sink capability with internal pull-up resistor
I/O24t
OUT8t
OUT12t - TTL level output pin with 12 mA source-sink capability
OD12
OD24
INt
INc
INcu
INcs
INts
INtsu
1.1 Host Interface
A0 A10
A11-A14
A15
D0 D5
D6 D7
AEN
IOCHRDY
MR
IOR
IOW
SYMBOL
- TTL level bi-directional pin with 6 mA source-sink capability
- TTL level bi-directional pin with 8 mA source-sink capability
- CMOS level bi-directional pin with 8 mA source-sink capability
- TTL level bi-directional pin with 12 mA source-sink capability
- CMOS level bi-directional pin with 12 mA source-sink capability
- CMOS level bi-directional pin with 16 mA source-sink capability with internal pull-up resistor
- TTL level bi-directional pin with 24 mA source-sink capability
- TTL level output pin with 8 mA source-sink capability
- Open-drain output pin with 12 mA sink capability
- Open-drain output pin with 24 mA sink capability
- TTL level input pin
- CMOS level input pin
- CMOS level input pin with internal pull-up resitor
- CMOS level Schmitt-triggered input pin
- TTL level Schmitt-triggered input pin
- TTL level Schmitt-triggered input pin with internal pull-up resistor
109-114
116-117
74-84
86-89
PIN
105
106
107
108
118
91
I/O
I/O
OD
IN
IN
IN
I/O
IN
IN
IN
IN
12t
12t
ts
ts
ts
24
t
t
t
t
System address bus bits 0-10
System address bus bits 11-14
System address bus bit 15
System data bus bits 0-5
System data bus bits 6-7
CPU I/O read signal
CPU I/O write signal
System address bus enable
In EPP Mode, this pin is the IO Channel Ready output to
extend the host read/write cycle.
Master Reset. Active high. MR is low during normal
operations.
W83977F/ W83977AF
FUNCTION
Publication Release Date: March 1998
-6-
PRELIMINARY
Revision 0.58