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參數(shù)資料
| 型號： | 27210 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Li-Ion AND Li-Pol BATTERY GAS GAUGE IC FOR PORTABLE APPLICATIONS (bqJUNIOR) |
| 中文描述： | 鋰離子和鋰聚合物電池電量監(jiān)測計芯片的便攜式應(yīng)用（bqJUNIOR） |
| 文件頁數(shù)： | 25/30頁 |
| 文件大?。?/td> | 337K |
| 代理商： | 27210 |
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UDG04099
21V pulse applied to
PROG pin for 50 ms
Host enables E2PROM
programming mode. Write data
0xDD to address 0x6E
Host writes data in addresses
0x76 0x7F
Host reads data
address 0x76
Write data 0x00 to
address 0x6E
Programmed
0x7F
Host increments
address and reads
No
Yes
Communicating With the bq27010 (HDQ interface)
The bq27010 includes a single-wire HDQ serial data interface. Host processors, configured for either polled or
interrupt processing, can use the interface to access various bq27010 registers. The HDQ pin is an open-drain
device, which requires an external pullup resistor. The interface uses a command-based protocol, where the
host processor sends a command byte to the bq27010. The command directs the bq27010 either to store the
next eight bits of data received to a register specified by the command byte or to output the eight bits of data
from a register specified by the command byte.
bq27010, bq27210
SLUS707B–APRIL 2006–REVISED JANUARY 2007
Figure 6. EEPROM Programming Flow
It is not required that addresses 0x76 — 0x7F be programmed at the same time or in any particular order. The
programming method illustrated in
Figure 6
can be used to program any of the bytes as long as the sequence of
Enable, Write, Read, Apply Programming Pulse, and Disable is followed.
The bqJUNIOR must have a full reset to force the updated EEPROM values into RAM. A full reset will occur
after a POR if RAM data is corrupted (failed checksum), or a full-reset command may be sent using the CTRL
and MODE registers.
25
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