LH7A400 查看數據表（PDF） - Sharp Electronics
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LH7A400 Datasheet PDF : 53 Pages
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LH7A400
32-Bit System-on-Chip
PBGA CABGA
PIN PIN
SIGNAL
R11 P12
VDDA
N12 M10
P12 R13
VSSA
T11 N11
D3
E4 nPOR
H6
D1 nURESET
D4
E2 WAKEUP
E4
F2 nPWRFL
C2
D2 nEXTPWR
R13 R14 XTALIN
T13 R15 XTALOUT
P16 N14 XTAL32IN
P15 M13 XTAL32OUT
P14 M12 CLKEN
J6
J5 PGMCLK
K11 P14 nCS0
K10 P16 nCS1
P13 N15 nCS2
M12
N16
nCS3/
nMMSPICS
Table 1. Functional Pin List (Cont’d)
DESCRIPTION
RESET
STATE
Analog Power for PLL
STANDBY OUTPUT
STATE
DRIVE
Analog Ground for PLL
Power On Reset
Input
Input
User Reset; should be pulled HIGH for normal or
JTAG operation.
Input (Schmitt) Input
Wake Up
Input (Schmitt) Input
Power Fail Signal
Input (Schmitt) Input
External Power
Input (Schmitt) Input
14.7456 MHz Crystal Oscillator pins. An external Input
clock source can be connected to XTALIN leav-
ing XTALOUT open.
LOW
Input
LOW
32.768 kHz Real Time Clock Crystal Oscillator Input
pins. An external clock source can be connected
to XTAL32IN leaving XTAL32OUT open.
Output
Input
Output
External Oscillator Clock Enable Output
LOW
LOW
Programmable Clock (14.7456 MHz MAX.)
LOW
LOW
Asynchronous Memory Chip Select 0
HIGH
HIGH
Asynchronous Memory Chip Select 1
HIGH
HIGH
Asynchronous Memory Chip Select 2
HIGH
HIGH
• Asynchronous Memory Chip Select 3
• MultiMediaCard SPI Mode Chip Select
HIGH: nCS3 HIGH
8 mA
8 mA
12 mA
12 mA
12 mA
12 mA
4
12/8/03
Preliminary Data Sheet
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