ST24FC21 STMICROELECTRONICS [STMicroelectronics], ST24FC21 Datasheet - Page 11

• Manufacturer Part Number: ST24FC21
• Description: 1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Table 8. AC Characteristics, I
(T
Notes: 1. For a reSTART condition, or following a write cycle.
Table 9. AC Characteristics, Transmit-only Mode
(T
Notes: 1. Refer to Figure 3.
t
A
A
RECOVERY
t
t
Symbol
VH1VH2
Symbol
t
t
t
VL1VL2
= –40 to 85 C; V
t
t
= –40 to 85 C; V
t
t
t
t
CHDX
VPU
CLQV
t
CH1CH2
DH1DH2
VCHVCL
VCLVCH
CL1CL2
DL1DL1
t
t
t
t
t
t
t
t
VCHQX
t
CHDH
CHCL
CLCH
DXCX
DHDL
CLQX
DLCL
CLDX
CLQZ
2. The minimum value delays the falling/rising edge of SDA away from SCL = 1 in order to avoid unwanted START and/or STOP
2. Sampled only, not 100% tested.
t
f
W
C
conditions.
(1,2)
(2)
(1)
(2)
(2)
(2)
t
t
t
t
t
t
t
HD:STA
HD:DAT
SU:DAT
SU:STO
SU:STA
t
VHIGH
VLOW
t
t
t
t
f
HIGH
t
Alt
Alt
LOW
VHZ
t
t
VAA
BUF
SCL
t
WR
t
t
t
DH
t
t
AA
R
R
R
F
F
F
CC
CC
= 3.6V to 5.5V)
= 3.6V to 5.5V)
Output Valid from VCLK
VCLK High Time
VCLK Low Time
Mode Tansition Time
Transmit-only Power-up Time
VCLK Rise Time
VCLK Fall Time
Recovery Time
Clock Rise Time
Clock Fall Time
Input Rise Time
Input Fall Time
Clock High to Input Transition
Clock Pulse Width High
Input Low to Clock Low (START)
Clock Low to Input Transition
Clock Pulse Width Low
Input Transition to Clock Transition
Clock High to Input High (STOP)
Input High to Input Low (Bus Free)
Clock Low to Next Data Out Valid
Data Out Hold Time
Clock Frequency
Write Time
2
C Bidirectional Mode for Clock Frequency = 100kHz
ST24LC21B, ST24LW21, ST24FC21, ST24FC21B, ST24FW21
Parameter
Parameter
Min
600
1.3
1.5
0
Min
250
200
4.7
4.7
4.7
4.7
0.2
4
4
0
Max
500
500
3.5
1
1
Max
300
300
100
3.5
10
1
1
Unit
sec
Unit
kHz
ns
ns
ns
ns
ms
ns
ns
ns
ns
s
s
s
s
s
s
s
s
s
s
s
s
s
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