ES25P80 Datasheet, PDF (5/35 Pages) Excel Semiconductor Inc. – 8Mbit CMOS 3.0 Volt Flash Memory with 75Mhz SPI Bus Interface

ADVANCED INFORMATION
EE SS II
Excel Semiconductor inc.
SPI Interface with
(CPOL, CPHA) =
(0,0) or (1,1)
Bus Master
SO
SI
SCK
SCK SO SI
SPI Memory
Device
SCK SO SI
SPI Memory
Device
SCK SO SI
SPI Memory
Device
CS1 CS2 CS3
CS#
W# HOLD# _CS#
W# HOLD# CS#
W# HOLD#
Figure 1. Bus Master and Memory Devices on the SPI Bus
Note : The Write Protect (W#) and Hold (HOLD#) signals should be driven, High or Low as appropriate
CS#
CPOL CPHA
0
0
SCK
1
1
SCK
SI
SO
MSB
MSB
Figure 2. SPI Modes Supported
ES25P80
5
Rev. 0D May, 11, 2006