DS2762AE+ Maxim Integrated Products, DS2762AE+ Datasheet - Page 13

• Manufacturer Part Number: DS2762AE+
• Description: IC MON BATT LI-ION HP 16-TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of DS2762AE+

• Function: Battery Monitor
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Operating Supply Voltage: 2.5 V to 5.5 V
• Supply Current: 60 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Charge Safety Timers: Yes
• Mounting Style: SMD/SMT
• Temperature Monitoring: Yes
• Output Voltage: 4.275 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
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:
·
·
·
·
The host may then poll the DS2762 to determine which threshold has been met or exceeded.
Figure 9. Interrupt Threshold Register Formats
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
Current Accumulator Interrupt High Threshold
Current Accumulator Interrupt Low Threshold
MSb
MSb
S
S
2
2
14
14
2
2
MSB—Address 80
MSB—Address 82
13
13
2
2
12
12
2
2
11
11
2
2
10
10
2
2
9
9
LSb
LSb
2
2
8
8
13 of 25
MSb
MSb
2
2
7
7
2
2
6
6
Units: 0.25mAhrs for Internal Sense Resistor
Units: 0.25mAhrs for Internal Sense Resistor
SS
2
2
LSB—Address 81
LSB—Address 83
6.25mVhrs for External Sense Resistor
6.25mVhrs for External Sense Resistor
. Writing a 1 to the PIO bit disables the
5
5
2
2
4
4
2
2
3
3
2
2
2
2
2
2
1
1
LSb
LSb
2
2
0
0