參數(shù)資料
型號(hào)： MC33701
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： 1.5 A Switch-Mode Power Supply with Linear Regulator(1.5 A開關(guān)方式電源，帶線性穩(wěn)壓器)
中文描述： 1.5開關(guān)模式電源，線性穩(wěn)壓器（1.5 A的開關(guān)方式電源，帶線性穩(wěn)壓器）
文件頁(yè)數(shù)： 21/24頁(yè)
文件大?。?/td> 841K
代理商： MC33701
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33701
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
Figure 19
).
Data Transfer Example
The master device controlling the I
2
C bus will always start
addressing a 33701 slave IC in writing mode (R/W = 0) in order
to be able to write a Command Byte just after the address
acknowledge. I
2
C 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
5
th
Setting
STOP
P
Ack
A6
A4
A0
0
0
1
0
0
0
Ack
0
0
Ack
0
0
1
0
0
1
0
1
S
A5
A3 A2 A1
0
F
Freescale Semiconductor, Inc.
Go to: www.freescale.com
n
.
相關(guān)PDF資料
PDF描述
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