參數(shù)資料
型號: UPD31172F1-48-FN
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): 15/44頁
文件大小: 278K
代理商: UPD31172F1-48-FN
Data Sheet U14388EJ2V0DS00
15
μ
PD31172
1.4 Recommended Connection of Unused Pins
Connect unused pins as shown in the table below.
Signal Name
Recommended Connection
Signal Name
Recommended Connection
SCLK
Pull up
PPON (1:2)
Leave open
AD (0:24)
OCI (1:2)
Pull down
DATA (0:31)
IEN
Pull down
LCDCS#
Pull up
WAKE
Leave open
RD#
Pull up
SMI#
Leave open
WR#
Pull up
USBRST#
Pull down
LCDRDY
Leave open
CD (0:7)
Pull down
ROMCS (2:3)#
Pull up
STROBE#
Pull up
CKE
Pull down
ACK#
Pull up
UUCAS#
Pull up
BUSY
Pull down
ULCAS#
Pull up
PE
Pull down
MRAS (0:1)#
Pull up
SELECT
Pull down
UCAS#
Pull up
AUTOFEED#
Pull up
LCAS#
Pull up
SELECTIN#
Pull up
IOR#
ERROR#
Pull up
IOW#
INIT#
Pull up
RESET
DIR1284
Leave open
IOCS16#
RXD
Pull down
IOCHRDY
CTS#
Pull up
HOLDRQ#
Leave open
DSR#
Pull up
HOLDAK#
Pull up
TXD
Leave open
SRAS#
Pull up
RTS#
Leave open
SCAS#
Pull up
DTR#
Leave open
BUSRQ (0:1)#
Pull up
DCD#
Pull up
BUSAK (0:1)#
Leave open
RI#
Pull up
INTRP
Leave open
PS2CLK
Pull up
IRQ
Leave open
PS2DATA
Pull up
USBINT#
Leave open
GPIO (0:23)
Pull down
PS2INT
Leave open
EXCS (0:5)#
Leave open
BUSCLK
Pull up
LCDBAK
Leave open
ARBCLKSEL
Pull down
XIN48M
Pull up
DP (1:2)
Pull down
XOUT48M
Leave open
DN (1:2)
Pull down
CLKOUT48M
Leave open
Remark
Pins with no particular specification (
) cannot be left unconnected.
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