PIC18C242 MICROCHIP [Microchip Technology], PIC18C242 Datasheet - Page 267
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PIC18C242
Manufacturer Part Number
PIC18C242
Description
High-Performance Microcontrollers with 10-Bit A/D
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18C242.pdf
(296 pages)
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FIGURE 21-19: MASTER SSP I
TABLE 21-18: MASTER SSP I
Param.
No.
100
101
102
103
90
91
106
107
92
109
110
D102
Note 1: Maximum pin capacitance = 10 pF for all I
7/99 Microchip Technology Inc.
2: A fast-mode I
Symbol
T
T
T
T
T
T
T
T
T
T
T
Cb
then be met. This will automatically be the case if the device does not stretch the LOW period of the SCL signal.
If such a device does stretch the LOW period of the SCL signal, it must output the next data bit to the SDA line.
parameter #102.+ parameter #107 = 1000 + 250 = 1250 ns (for 100 kHz-mode) before the SCL line is released.
R
AA
HIGH
LOW
F
SU
HD
HD
SU
SU
BUF
:
:
:
:
:
SDA
Out
STA
DAT
STO
STA
DAT
SDA
In
SCL
Note: Refer to Figure 21-4 for load conditions.
Characteristic
Clock high time
Clock low time
SDA and SCL
rise time
SDA and SCL
fall time
START condition
setup time
START condition
hold time
Data input
hold time
Data input
setup time
STOP condition
setup time
Output valid from
clock
Bus free time
Bus capacitive loading
2
C bus device can be used in a standard-mode I
90
103
91
2
2
109
C BUS DATA TIMING
C BUS DATA REQUIREMENTS
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100 kHz mode
400 kHz mode
1 MHz mode
100
Preliminary
2
106
C pins.
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
Min
2(T
2(T
2(T
2(T
2(T
2(T
2(T
2(T
2(T
2(T
2(T
2(T
2(T
2(T
2(T
101
109
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
OSC
20 + 0.1Cb
20 + 0.1Cb
TBD
TBD
TBD
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
250
100
)(BRG + 1)
)(BRG + 1)
)(BRG + 1)
4.7
1.3
—
—
—
—
—
—
—
—
0
0
107
2
C bus system, but parameter #107
Max
1000
3500
1000
300
300
300
300
100
0.9
400
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Units
92
PIC18CXX2
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
102
110
Conditions
Cb is specified to be from
10 to 400 pF
Cb is specified to be from
10 to 400 pF
Only relevant for repeated
START condition
After this period the first
clock pulse is generated
Note 2
Time the bus must be free
before a new transmis-
sion can start
DS39026B-page 267
250 ns must
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