FM25C040 Fairchild Semiconductor, FM25C040 Datasheet - Page 5

• Manufacturer Part Number: FM25C040
• Description: 4K-Bit SPI Interface Serial CMOS EEPROM
• Manufacturer: Fairchild Semiconductor

FM25C040U Rev. B
FIGURE 1. Synchronous Data Timing Diagram
FIGURE 2. SPI Protocol
FIGURE 3. HOLD Timing
CS
SCK
/HOLD
SO
SI
/CS
SCK
SI
SO
Mode 3
/CS
SCK
SI
SO
Input (n+2)
Output (n+2)
Bit 7
Mode 3
Mode 0
Bit 6
Bit 5
High Z
Bit 4
Input (n+1)
t CSS
Output (n+1)
Bit 3
t DIS
Valid Input
Bit 2
t DIH
t CLH
t HDS
Bit 1
Input (n)
t HDH
Output (n)
Bit 0
t PD
t HZ
t CLL
Low state ( /CS = 0)
5
Bit 7
Valid Output
Bit 6
Bit 5
Don't Care
Don't Care
t DH
Bit 4
High Z
Don't Care
t CSH
Bit 3
Bit 2
t HDS t HDH
t DF
Mode 3
Mode 0
Bit 1
t CSI
t LZ
t DIS
Bit 0
High Z
Input (n)
Output (n)
Mode 3
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