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83C552 Datasheet, PDF (15/24 Pages) NXP Semiconductors – Single-chip 8-bit microcontroller | |||
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Philips Semiconductors
Single-chip 8-bit microcontroller
Product specification
80C552/83C552
AC ELECTRICAL CHARACTERISTICS (Continued)
SYMBOL
PARAMETER
INPUT
OUTPUT
I2C Interface (Refer to Figure 9)
tHD;STA
tLOW
tHIGH
tRC
tFC
START condition hold time
SCL low time
SCL high time
SCL rise time
SCL fall time
⥠14 tCLCL
⥠16 tCLCL
⥠14 tCLCL
⤠1µs
⤠0.3µs
> 4.0µs 1
> 4.7µs 1
> 4.0µs 1
â2
< 0.3µs 3
tSU;DAT1
tSU;DAT2
Data set-up time
SDA set-up time (before rep. START cond.)
⥠250ns
⥠250ns
> 20 tCLCL â tRD
> 1µs 1
tSU;DAT3 SDA set-up time (before STOP cond.)
⥠250ns
> 8 tCLCL
tHD;DAT
Data hold time
⥠0ns
> 8 tCLCL â tFC
tSU;STA
Repeated START set-up time
⥠14 tCLCL
> 4.7µs 1
tSU;STO STOP condition set-up time
⥠14 tCLCL
> 4.0µs 1
tBUF
Bus free time
⥠14 tCLCL
> 4.7µs 1
tRD
SDA rise time
⤠1µs
â2
tFD
SDA fall time
⤠0.3µs
< 0.3µs 3
NOTES:
1. At 100 kbit/s. At other bit rates this value is inversely proportional to the bit-rate of 100 kbit/s.
2. Determined by the external bus-line capacitance and the external bus-line pull-resistor, this must be < 1µs.
3. Spikes on the SDA and SCL lines with a duration of less than 3 tCLCL will be filtered out. Maximum capacitance on bus-lines SDA and
SCL = 400pF.
4. tCLCL = 1/fOSC = one oscillator clock period at pin XTAL1. For 62ns, 42ns, 33.3ns < tCLCL < 285ns (16MHz, 24MHz, 30MHz > fOSC >
1.2MHz) the SI01 interface meets the I2C-bus specification for bit-rates up to 100 kbit/s.
1998 Aug 13
15
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