参数资料
型号: ZM7304G-65501-T1
厂商: Power-One
文件页数: 27/33页
文件大小: 0K
描述: IC DIGITAL PWR CONTROLLER 64QFN
标准包装: 500
应用: 数字电源控制器
电源电压: 3 V ~ 3.6 V
电流 - 电源: 12mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-QFN
供应商设备封装: 64-QFN 裸露焊盘(9x9)
包装: 带卷 (TR)
ZM7300G Series Digital Power Manager
Data Sheet
The HRES_N function is intended as an emergency reset and except as indicated below, should
not be used in normal system operation.
It is necessary to use an external reset circuit (see Fig. 3) to hold the HRES_N line low until the VDD
supply reaches steady state conditions. Power-One Inc. successfully tested the On-Semi voltage
detector p/n NCP303LSN27T1 although other similar devices can also be utilized. Alternatively, the
HW_RES pin can be connected to the output of a CPLD (or similar device) and controlled via the
system supervisory circuitry.
10.7
Communication Interfaces
10.7.1 I 2 C Interface
The ZM7300 series DPMs have the industry standard I 2 C interface fully meeting the requirements of the
I2C -Bus Specification Version 2.1 from Philips Semiconductors. The I 2 C interface is working in the
following configurations:
?
?
standard (100kbs) and fast (400kbs) data transfer rates
7-bit addressing: 4 MSBs fixed, 3 LSBs programmable by ADDR[2:0]. The address prefix of the
ZM7300 is 0x50. This allows encoding DPM addresses 0x50, 0x52, …, 0x5E (Bit0 is the
read/write bit)
The DPM always acts as the I 2 C slave while the host processor always acts as the I 2 C master. Refer to
the “DPM Programming Manual” for the detailed description of the I 2 C communications.
Note: It is recommended to use Power-One’s ZM00056-KIT USB to I 2 C Adapter kit for the
communication between a DPM and a computer with the Z-One Graphical User Interface
10.7.1.1
Watchdog Timer
In order to prevent occasional hanging of the I 2 C bus, a watchdog timer is started whenever an I 2 C
command is initiated. If the command is not executed before the watchdog times out, the DPM will
assume that the I 2 C bus is in an error condition (e.g. the SCL or SDA lines are pulled low continuously)
and it will reset the I 2 C bus. The watchdog timeout is 1000ms. Since the watchdog function is not a
part of the standard I 2 C specifications, it can be disabled by the user.
10.7.2 JTAG Interface
The ZM7300 series DPMs feature the JTAG interface that can be used for programming the DPM with
user-specific configuration settings. JTAG boundary-scan capabilities are not currently supported.
JTAG-programmable DPMs have unique 5-digit identifiers listed in Table 6.
Table 6. JTAG Programmable DPM Part Numbers
Base Part Number
ZM7304G
ZM7308G
ZM7316G
ZM7332G
5- digit identifier
65505
65506
65507
65508
ZD-00896 Rev. 5.1, 13-Jul-10
www.power-one.com
Page 27 of 33
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