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TIMING CHARACTERISTICS
DAC7571
SLAS374C – FEBRUARY 2003 – REVISED MAY 2006
SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
f
SCL
SCL Clock Frequency Standard mode 100 kHz
Fast mode 400 kHz
High-speed mode, C
B
- 100pF max 3.4 MHz
High-Speed mode, C
B
- 400pF max 1.7 MHz
t
BUF
Bus Free Time Between a STOP Standard mode 4.7 µs
and START Condition
Fast mode 1.3 µs
t
HD
; t
STA
Hold Time (Repeated) START Standard mode 4.0 µs
Condition
Fast mode 600 ns
High-speed mode 160 ns
t
LOW
LOW Period of the SCL Clock Standard mode 4.7 µs
Fast mode 1.3 µs
High-speed mode, C
B
- 100pF max 160 ns
High-speed mode, C
B
- 400pF max 320 ns
t
HIGH
HIGH Period of the SCL Clock Standard mode 4.0 µs
Fast mode 600 ns
High-speed mode, C
B
- 100pF max 60 ns
High-speed mode, C
B
- 400pF max 120 ns
t
SU
; t
STA
Setup Time for a Repeated Standard mode 4.7 µs
START Condition
Fast mode 600 ns
High-speed mode 160 ns
t
SU
; t
DAT
Data Setup Time Standard mode 250 ns
Fast mode 100 ns
High-speed mode 10 ns
t
HD
; t
DAT
Data Hold Time Standard mode 0 3.45 µs
Fast mode 0 0.9 µs
High-speed mode, C
B
- 100pF max 0 70 ns
High-speed mode, C
B
- 400pF max 0 150 ns
t
RCL
Rise Time of SCL Signal Standard mode 1000 ns
Fast mode 20 + 0.1C
B
300 ns
High-speed mode, C
B
- 100pF max 10 40 ns
High-speed mode, C
B
- 400pF max 20 80 ns
t
RCL1
Rise Time of SCL Signal After a Standard mode 1000 ns
Repeated START Condition and
Fast mode 20 + 0.1C
B
300 ns
After an Acknowledge BIT
High-speed mode, C
B
- 100pF max 10 80 ns
High-speed mode, C
B
- 400pF max 20 160 ns
t
FCL
Fall Time of SCL Signal Standard mode 300 ns
Fast mode 20 + 0.1C
B
300 ns
High-speed mode, C
B
- 100pF max 10 40 ns
High-speed mode, C
B
- 400pF max 20 80 ns
t
RDA
Rise Time of SDA Signal Standard mode 1000 ns
Fast mode 20 + 0.1C
B
300 ns
High-speed mode, C
B
- 100pF max 10 80 ns
High-speed mode, C
B
- 400pF max 20 160 ns
t
FDA
Fall Time of SDA Signal Standard mode 300 ns
Fast mode 20 + 0.1C
B
300 ns
High-speed mode, C
B
- 100pF max 10 80 ns
High-speed mode, C
B
- 400pF max 20 160 ns
4
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