W83627SF-AW Winbond, W83627SF-AW Datasheet - Page 18

• Manufacturer Part Number: W83627SF-AW
• Manufacturer: Winbond

Specifications of W83627SF-AW

• Pin Count: 128
• Lead Free Status / RoHS Status: Not Compliant

4.4
PNPCSV#
ENGMTO
PENKBC
SYMBOL
HEFRAS
SOUTA
DSRA#
DSRB#
DTRA#
DTRB#
CTSA#
CTSB#
RTSA#
RTSB#
SINA
SINB
Serial Port Interface
PIN
49
78
50
79
51
80
52
81
53
82
54
I/O
I/O
I/O
I/O
I/O
I/O
IN
IN
IN
8t
8t
8t
8t
8t
t
t
t
Clear To Send. It is the modem control input.
The function of these pins can be tested by reading bit 4 of
the handshake status register.
Data Set Ready. An active low signal indicates the modem
or data set is ready to establish a communication link and
transfer data to the UART.
UART A Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
During power-on reset, this pin is pulled down internally and
is defined as HEFRAS, which provides the power-on value
for CR26 bit 6 (HEFRAS). A 4.7 k
intends to pull up. (select 4EH as configuration I/O port s
address)
UART B Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
Power on setting pin for enabling Watch Dog timer and its
countdown. This pin is pulled down internally and provides
the power-on value for bit 0 of CR30 and a count value of
0x0A for CRF6 in logical device 8. A 4.7 k is recommended
if intends to pull up.
UART A Data Terminal Ready. An active low signal informs
the modem or data set that the controller is ready to
communicate.
During power-on reset, this pin is pulled down internally and
is defined as PNPCSV# , which provides the power-on value
for CR24 bit 0 ( PNPCSV# ). A 4.7 k
intends to pull up. (clear the default value of FDC, UARTs,
PRT, Game port and MIDI port)
UART B Data Terminal Ready. An active low signal informs
the modem or data set that controller is ready to
communicate.
Serial Input. It is used to receive serial data through the
communication link.
UART A Serial Output. It is used to transmit serial data out to
the communication link.
During power-on reset, this pin is pulled down internally and
is defined as PENKBC, which provides the power-on value
for CR24 bit 2 (ENKBC). A 4.7 k resistor is recommended if
intends to pull up. (enable KBC)
-18-
FUNCTION
is recommended if
is recommended if
W83627SF