參數(shù)資料
型號: UPD31172
廠商: NEC Corp.
英文描述: VRC4172TM COMPANION CHIP FOR VR4121TM
中文描述: VRC4172TM伴侶芯片VR4121TM
文件頁數(shù): 5/44頁
文件大?。?/td> 278K
代理商: UPD31172
Data Sheet U14388EJ2V0DS00
5
μ
PD31172
PIN IDENTIFICATION
ACK#:
AD (0:24):
ARBCLKSEL:
AUTOFEED#:
BUSAK (0:1)#:
BUSCLK:
BUSRQ (0:1)#:
BUSY:
CD (0:7):
CKE:
CLKOUT48M:
CTS#:
DATA (0:31):
DCD#:
DIR1284:
DN (1:2):
DP (1:2):
DSR#:
DTR#:
ERROR#:
EXCS (0:5)#:
GND:
GPIO (0:23):
HOLDAK#:
HOLDRQ#:
IEN:
INIT#
INTRP:
IOCHRDY:
IOCS16#:
IOR#:
IOW#:
IRQ:
LCAS#:
LCDBAK:
LCDCS#:
LCDRDY:
Acknowledge
Address Bus
Arbitration Clock Select
Autofeed
Bus Acknowledge
System Bus Clock
Bus Request
Busy
Centronics Data
Clock Enable
Clock Out of 48 MHz
Clear to Send
Data Bus
Data Carrier Detect
Direction of 1284
USB D
USB D+
Data Set Ready
Data Terminal Ready
Error
External CS
Ground
General Purpose I/O
Hold Acknowledge
Hold Request
USB Input Enable
Initialize
Interrupt
I/O Channel Ready
IO Chip Select 16
I/O Read
I/O Write
I/O Request
Lower Column Address Strobe
LCD Back Light
LCD Chip Select
LCD Ready
MRAS (0:1)#:
OCI (1:2):
PE:
PPON (1:2):
PS2CLK:
PS2DATA:
PS2INT:
RD#:
RESET:
RI#:
ROMCS (2:3)#:
RTS#:
RXD:
SCAS#:
DRAM Row Address Strobe
Over Current Interrupt
Paper End
Port Power ON
PS2 Clock
PS2 Data
PS2 Interrupt
Read
Reset
Ring Indicator
ROM Chip Select
Request to Send
Receive Data
Column Address Strobe for
SDRAM
SDRAM Clock
Select
Select in
USB System Interrupt
Row Address Strobe for
SDRAM
Strobe
Transmit Data
Upper Column Address Strobe
Lower Byte of Upper Column
Address Strobe
USB Interrupt
USB Reset
Upper Byte of Upper Column
Address Strobe
Power Supply Voltage
Wake Up Interrupt
Write
Clock In of 48 MHz
Clock Out of 48 MHz
SCLK:
SELECT:
SELECTIN#:
SMI#:
SRAS#:
STROBE#:
TXD:
UCAS#:
ULCAS#:
USBINT#:
USBRST#:
UUCAS#:
V
DD
:
WAKE:
WR#:
XIN48M:
XOUT48M:
Remark
# indicates active low.
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