ViewSonic VA703b-1 Service Manual page 18

PIN Descriptions:
Symbol Type
CE# INPUT
SCK INPUT
SI INPUT
SO OUTPUT
GND
Vcc
WP# INPUT
HOLD# INPUT
Circuit Diagram
ViewSonic Corporation
Chip Enable: CE# goes low activates the device's internal
circuitries for device operation. CE# goes high deselects the
device and switches into standby mode to reduce the power
consumption. When the device is not selected, data will not be
accepted via the serial input pin (SI), and the serial output pin
(SO) will remain in a high impedance state.
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Device Power Supply
Write Protect: When the WP# pin brought to low and WPEN bit is
"1", all write operations to the status register are inhibited.
Hold: Pause serial communication with the master device without
resetting the serial sequence.
15
Description
Confidential - Do Not Copy VA703b-1_VA703m-1