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參數(shù)資料
| 型號： | PC33702DWBR2 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO32 |
| 封裝： | PLASTIC, SOIC-32 |
| 文件頁數(shù)： | 14/24頁 |
| 文件大?。?/td> | 647K |
| 代理商： | PC33702DWBR2 |
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33702
21
Communication Stop
Only the master can terminate the data transfer by issuing a
STOP condition. The slave waits for this condition to resume its
initial state waiting for the next START condition (see
Data Transfer Example
The master device controlling the I2C bus will always start
addressing a 33702 slave IC in writing mode (R/W = 0) in order
to be able to write a Command Byte just after the address
acknowledge. I2C bus protocol defines this circumstance as a
master-transmitter and slave-receiver configuration.
Eventually this Command Byte can again define a Write
operation (e.g., Voltage Margining, see Figure 19), and the
master will keep the data transfer direction.
Figure 19 illustrates a communication beginning with the
slave address, the first command for voltage margining, and a
third byte containing the address field 001 and the value field
00101 corresponding with the LDO fifth setting (LDO output
voltage = +5% above its nominal value). If a simultaneous
setting for switcher is needed, a fourth byte should be included
before the STOP condition (P); for instance, 001 10010 to set
switcher in its second setting (switcher output voltage = +2%
above its nominal value).
Figure 19. Complete Data Transfer Example
START
Slave Address
Write
First Command for Voltage Margining
Address Field Value Field = LDO
5th Setting
STOP
P
Ack
A6
A4
A0
00
1
0
0Ack
00
Ack
00
1 00
10
1
S
A5
A3 A2 A1
0
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