PIC17C75X
2
FIGURE 20-13: I C BUS START/STOP BITS TIMING
SCL
93
91
90
92
SDA
STOP
Condition
START
Condition
Note: Refer to Figure 20-1 for load conditions
2
TABLE 20-13: I C BUS START/STOP BITS REQUIREMENTS
Param.
No.
Sym
Characteristic
Min
Typ Max Units
Conditions
90
91
92
93
TSU:STA START condition 100 kHz mode
Setup time 400 kHz mode
2(TOSC)(BRG + 1) §
2(TOSC)(BRG + 1) §
2(TOSC)(BRG + 1) §
—
—
—
—
—
—
Only relevant for
repeated START condi-
tion
ns
ns
ns
ns
(1)
1 MHz mode
THD:STA START condition 100 kHz mode
2(TOSC)(BRG + 1) §
2(TOSC)(BRG + 1) §
2(TOSC)(BRG + 1) §
—
—
—
—
—
—
After this period the first
clock pulse is generated
Hold time
400 kHz mode
(1)
1 MHz mode
100 kHz mode
400 kHz mode
TSU:STO STOP condition
Setup time
2(TOSC)(BRG + 1) §
2(TOSC)(BRG + 1) §
2(TOSC)(BRG + 1) §
—
—
—
—
—
—
(1)
1 MHz mode
100 kHz mode
400 kHz mode
THD:STO STOP condition
Hold time
2(TOSC)(BRG + 1) §
2(TOSC)(BRG + 1) §
2(TOSC)(BRG + 1) §
2
—
—
—
—
—
—
(1)
1 MHz mode
§
This specification ensured by design. For the value required by the I C specification, please refer to Figure E-11.
2
Note 1: Maximum pin capacitance = 10 pF for all I C pins.
1997 Microchip Technology Inc.
Preliminary
DS30264A-page 241
MICROCHIP [ MICROCHIP ]
