参数资料
型号: MAX8939EWV+T
厂商: Maxim Integrated Products
文件页数: 28/45页
文件大小: 0K
描述: IC PWR MGMT HANDSETS 30WLP
标准包装: 2,500
应用: 充电泵,无线设备
输入电压: 2.9 V ~ 5.5 V
输出数: 7
工作温度: -40°C ~ 85°C
安装类型: *
封装/外壳: *
供应商设备封装: *
包装: *
MAX8939/MAX8939A/MAX8939B
System Power Management
for Mobile Handset
8) The slave asserts an acknowledge by pulling SDA low.
9) The slave sends the 8-bit data (contents of the register).
10) The master asserts a not acknowledge by keeping
SDA high.
11) The master sends a STOP condition.
In addition, the ICs can read a block of multiple sequen-
tial registers as shown in section B of Figure 15. Use
the following procedure to read a sequential block of
registers:
1) The master sends a START command.
2) The master sends the 7-bit slave address followed by
a write bit (0x62).
3) The addressed slave asserts an acknowledge by pulling
SDA low.
4) The master sends an 8-bit register pointer of the first
register in the block.
5) The slave acknowledges the register pointer.
6) The master sends a REPEATED START condition.
7) The master sends the 7-bit slave address followed by
a read bit (0x063).
8) The slave asserts an acknowledge by pulling SDA low.
9) The slave sends the 8-bit data (contents of the register).
10) The master asserts an acknowledge by pulling SDA low
when there is more data to read, or a not acknowledge
by keeping SDA high when all data has been read.
11) Steps 9 and 10 are repeated for as many registers
in the block, with the register pointer automatically
incremented each time.
12) The master sends a STOP condition.
SDA
t LOW
t SU,DAT
t HD,DAT
t SU,STA
t HD,STA
t SU,STO
t BUF
SCL
t HD,STA
t R
t HIGH
t F
START CONDITION
REPEATED START CONDITION
STOP CONDITION
START CONDITION
Figure 16. I 2 C Timing Diagram
Table 2. Register Access Types
28
SYMBOL
R
W
R/W
RH
R&C
NASR
REGISTER TYPE
Read only
Write only
Read/write
Read only; hardware affected
Read and clear
Not affected by software reset
NOTES
A field which is either static or is updated only by hardware.
Value written by software is ignored by hardware; that is,
software may write any value to this field without affecting
hardware behavior.
Hardware updates of this field are visible by software read and
software updates of this field are visible by a hardware read.
Maxim Integrated
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