AT88SC0808CA-SH ATMEL [ATMEL Corporation], AT88SC0808CA-SH Datasheet - Page 6

• Manufacturer Part Number: AT88SC0808CA-SH
• Description: Atmel CryptoMemory
• Manufacturer: ATMEL [ATMEL Corporation]

5.
5.1
5.1.1
5.1.2
5.1.3
Table 4-2.
Applicable over recommended operating range from V
(unless otherwise noted)
Device Operations for Synchronous Protocols
Clock and Data Transitions
The SDA pin is normally pulled high with an external device. Data on the SDA pin may change only during SCL low time
periods (see Figure 5-3 on page 8). Data changes during SCL high periods will indicate a start or stop condition as defined
below.
Start condition
A high-to-low transition of SDA with SCL high defines a start condition which must precede all commands (see Figure 5-4 on
page 8).
Stop condition
A low-to-high transition of SDA with SCL high defines a stop condition. After a read sequence, the stop condition will place the
EEPROM in a standby power mode (see Figure 5-4 on page 8).
Acknowledge
All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words. The EEPROM sends a zero to
acknowledge that it has received each word. This happens during the ninth clock cycle (see Figure 5-5 on page 8).
Symbol
f
f
t
t
t
t
t
t
t
t
t
t
t
t
CLK
CLK
R
F
R
F
AA
HD.STA
SU.STA
HD.DAT
SU.DAT
SU.STO
DH
WR
Parameter
Async Clock Frequency
Synch Clock Frequency
Clock Duty cycle
“Rise Time - SDA/IO, RST”
“Fall Time - SDA/IO, RST”
Rise Time - SCL/CLK
Fall Time - SCL/CLK
Clock Low to Data Out Valid
Start Hold Time
Start Set-up Time
Data In Hold Time
Data In Set-up Time
Stop Set-up Time
Data Out Hold Time
Write Cycle Time
AC Characteristics
CC
= +2.7 to 3.6V, T
Atmel AT88SC0808CA [Summary DATASHEET]
AC
= -40°C to +85°C, CL = 30pF
Min
200
200
100
200
40
10
20
1
0
9% x period
9% x period
Max
250
60
4
1
1
1
5
5204FS−CRYPTO−12/11
Units
MHz
MHz
mS
µS
µS
µS
µS
nS
nS
nS
nS
nS
nS
nS
%
6