X4283 Datasheet, PDF (16/22 Pages) Xicor Inc. – CPU Supervisor with 128K EEPROM

X4283/85 – Preliminary Information
TIMING DIAGRAMS
Bus Timing
t_F
SCL
t_SU:STA
SDA IN
t_HD:STA
t_HIGH
t_LOW
t_SU:DAT
t_HD:DAT
SDA OUT
t_R
t_AA t_DH
t_SU:STO
t_BUF
WP Pin Timing
SCL
SDA IN
WP
START
t_SU:WP
Clk 1
Slave Address Byte
Clk 9
t_HD:WP
Write Cycle Timing
SCL
SDA
8^th Bit of Last Byte
ACK
t_WC
Stop
Condition
Start
Condition
Nonvolatile Write Cycle Timing
Symbol
t_WC⁽¹⁾
Parameter
Write Cycle Time
Min.
Typ.⁽¹⁾
5
Max.
10
Unit
ms
Note: (1) t_WC is the time from a valid stop condition at the end of a write sequence to the end of the self-timed internal nonvolatile write cycle.
It is the minimum cycle time to be allowed for any nonvolatile write by the user, unless Acknowledge Polling is used.
REV 1.17 11/27/00
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Characteristics subject to change without notice. 16 of 22