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CY8C9520 Datasheet(PDF) 20 Page - Cypress Semiconductor

Part No. CY8C9520
Description  20-, 40-, and 60-Bit I/O Expander with EEPROM
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY8C9520 Datasheet(HTML) 20 Page - Cypress Semiconductor

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August 17, 2005
Document No. 38-12036 Rev. *A
20
CY8C95xx Preliminary Data Sheet
4. Electrical Specifications
4.4.3
AC I2C Specifications
The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40°C
≤ TA ≤ 85°C, or 3.0V to 3.6V and -40°C ≤ TA ≤ 85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and
are for design guidance only or unless otherwise specified.
Figure 4-2. Definition for Timing for Fast/Standard Mode on the I2C Bus
Table 4-11: AC Characteristics of the I2C SDA and SCL Pins
Symbol
Description
Standard Mode
Fast Mode
Units
Notes
Min
Max
Min
Max
FSCLI2C
SCL Clock Frequency
0
100
0
400
kHz
THDSTAI2C
Hold Time (repeated) START Condition. After this period,
the first clock pulse is generated.
4.0
–0.6
µs
TLOWI2C
LOW Period of the SCL Clock
4.7
–1.3
µs
THIGHI2C
HIGH Period of the SCL Clock
4.0
–0.6
µs
TSUSTAI2C
Set-up Time for a Repeated START Condition
4.7
–0.6
µs
THDDATI2C
Data Hold Time
0
–0
µs
TSUDATI2C
Data Set-up Time
250
1003
–ns
TSUSTOI2C
Set-up Time for STOP Condition
4.0
–0.6
µs
TBUFI2C
Bus Free Time Between a STOP and START Condition
4.7
–1.3
µs
TSPI2C
Pulse Width of spikes are suppressed by the input filter.
–0
50
ns
SDA
SCL
S
Sr
S
P
T
BUFI2C
T
SPI2C
T
HDSTAI2C
T
SUSTOI2C
T
SUSTAI2C
T
LOWI2C
T
HIGHI2C
T
HDDATI2C
T
HDSTAI2C
T
SUDATI2C


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