参数资料
型号: DS2762AE+025/T&R
厂商: Maxim Integrated Products
文件页数: 13/25页
文件大小: 0K
描述: IC MON BATT LI-ION HP 16-TSSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
功能: 电池监控器
电池化学: 锂离子(Li-Ion)
电源电压: 2.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 带卷 (TR)
DS2762 High-Precision Li+ Battery Monitor With Alerts
PROGRAMMABLE I/O
To use the PIO pin as described in this section, the IE bit (bit 2) of the Status Register must be set to 0.
To use the PIO pin as an output, write the desired output value to the PIO bit in the special feature register. Writing
a 0 to the PIO bit enables the PIO output driver, pulling the PIO pin to V SS . Writing a 1 to the PIO bit disables the
output driver, allowing the PIO pin to be pulled high or used as an input. To sense the value on the PIO pin, read
the PIO bit. The DS2762 turns off the PIO output driver and sets the PIO bit high when in sleep mode or when DQ
is low for more than 2s, regardless of the state of the PMOD bit.
ALARM COMPARATORS
The PIO pin can be programmed as an interrupt output (active low) to alert the host system of critical events. To
use the Interrupt feature, the Interrupt Enable (IE) bit (bit 2) of the Status Register must be set to a 1. Interrupt
threshold values can be programmed by the user in the designated SRAM memory registers in the formats and
locations found in Figure 9. Since these thresholds are located in SRAM memory, they must be reprogrammed if a
loss of power to the DS2762 occurs. The PIO line will go low to interrupt the system host and indicate that one of
the following events has occurred:
·
·
·
·
Accumulated Current 3 Current Accumulator Interrupt High Threshold
Accumulated Current £ Current Accumulator Interrupt Low Threshold
Temperature 3 Temperature Interrupt High Threshold
Temperature £ Temperature Interrupt Low Threshold
The host may then poll the DS2762 to determine which threshold has been met or exceeded.
Figure 9. Interrupt Threshold Register Formats
Current Accumulator Interrupt High Threshold
MSB—Address 80
LSB—Address 81
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
S
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MSb
LSb
MSb
LSb
Units: 0.25mAhrs for Internal Sense Resistor
6.25 m Vhrs for External Sense Resistor
Current Accumulator Interrupt Low Threshold
MSB—Address 82
LSB—Address 83
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
S
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MSb
LSb
MSb
LSb
Units: 0.25mAhrs for Internal Sense Resistor
6.25 m Vhrs for External Sense Resistor
13 of 25
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