W83627EHG Nuvoton Technology Corporation of America, W83627EHG Datasheet - Page 24

• Manufacturer Part Number: W83627EHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627EHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DSKCHG#
SYMBOL
RDATA#
TRAK0#
HEAD#
WD#
WE#
WP#
PIN
10
11
13
14
15
16
17
OD
OD
OD
IN
IN
IN
IN
I/O
tsu
tsu
tsu
tsu
24
24
24
Write data. This logic low open drain writes pre-compensation serial data
to the selected FDD. An open drain output.
Write enable. An open drain output.
Track 0. This Schmitt-triggered input from the disk drive is active low
when the head is positioned over the outermost track. This input pin
can be pulled up internally by a 1 KΩ(±50%). The resistor also can be
disabled/enabled by bit 7 of LD0-CRF0(FIPURDWN). Default is disabled.
Write protected.
indicates that the diskette is write-protected. This input pin can be pulled
up internally by a 1 KΩ(±50%). The resistor also can be disabled/enabled
by bit 7 of LD0-CRF0(FIPURDWN). Default is disabled.
The read data input signal from the FDD. This input pin can be pulled up
internally by a 1 KΩ(±50%). The resistor also can be disabled/enabled by
bit 7 of LD0-CRF0(FIPURDWN). Default is disabled.
Head select. This open drain output determines which disk drive head is
active.
Logic 1 = side 0
Logic 0 = side 1
Diskette change. This signal is active low at power on and whenever the
diskette is removed. This input pin can be pulled up internally by a 1 KΩ(±
50%) . The resistor also can be disabled / enabled by bit 7 of LD0-CRF0
(FIPURDWN). Default is disabled.
W83627EHF/EF, W83627EHG/EG
This active low Schmitt input from the disk drive
-13-
FUNCTION
Publication Release Date: April 7, 2009
Version 1.94