DS80CH11 Maxim, DS80CH11 Datasheet - Page 86

• Manufacturer Part Number: DS80CH11
• Description: The system energy manager is a highly integrated microcontroller that provides several key features for systems including key scanning and control, battery and power management, as well as two 2-Wire serial I/O Ports
• Manufacturer: Maxim

13.6 2–WIRE AC TIMING CHARACTERISTICS
NOTES:
1. At 400Kbps. For other bit rates this value is multiplied by 400 / f
2. Determined by the external bus line capacitance and the external bus line pull–up resistor; this must be < 300 ns
3. Spikes on the SDAx and SCLx lines with a duration of less than 50 ns will be filtered out. Maximum capacitance
4. Where t
5. Both 2–Wire ports are identical and therefore only SDAx and SCLx are used here to simplify all notations.
2–WIRE SERIAL I/O TIMING Figure 13–12
DS80CH11
011200 86/88
PARAMETER
START Condition Hold Time
SCLx Low Time
SCLx High Time
SCLx, SDAx Rise Time
SCLx, SDAx Fall Time
Data Setup Time
Data Hold Time
Repeated START Setup Time
Repeated STOP Setup Time
Bus Free Time
@ 400Kbps.
on either SDAx and SCLx = 400 pF.
quency of the XTAL oscillator should be greater than 5 MHz for 400Kbps operation.
SDAx = SDA1 or SDA2 and SCLx = SCL1 or SCL2 (“x” = 1 or 2).
SDAx
SCLx
CLK
is the period of the XTAL oscillator and the instruction cycle rate is set to 4 clocks (default). The fre-
t
SF
t
STAH
t
SCL
t
SR
t
SR
t
SCH
SYMBOL
t
t
SF
2DS
t
t
t
t
RSTO
STAH
t
t
t
RSTA
t
SCH
SCL
t
t
2DS
2DH
2BF
SR
SF
> 16 t
> 14 t
> 14 t
> 14 t
> 14 t
> 14 t
< 300 ns
< 300 ns
> 100 ns
INPUT
t
> 0 ns
2DH
CLK
CLK
CLK
CLK
CLK
CLK
2W
(1)
(3)
(4)
(4)
(4)
(4)
(4)
(4)
.
(0 C to 70 C; V
t
2DS
t
2DS
> 8 t
t
t
> 250 ns
> 600 ns
> 600 ns
RSTO
RSTA
> 1.0 s
> 1.3 s
> 0.6 s
> 1.3 s
OUTPUT
< 300 ns
CLK
–
– t
CC
(2)
SF
(1)
(1)
(1)
(1)
(1)
(1)
(1)
=5.0
(4)
t
2BF
10%)