DS2703U+T&R Maxim Integrated Products, DS2703U+T&R Datasheet - Page 18

• Manufacturer Part Number: DS2703U+T&R
• Description: IC BATT AUTHENTICATE SHA-1 8UMAX
• Manufacturer: Maxim Integrated Products

Specifications of DS2703U+T&R

• Function: Battery Authentication
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -20°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS2703 SHA-1 Battery Pack Authentication IC
PROGRAMMING PULSE
A typical programming waveform is shown in Figure 10. The user issues a 1-Wire reset followed by a Skip ROMID
command, Match ROMID plus the ROMID, Search or Read Net, the Load Secret command and then the two 32-bit
words to be loaded into EEPROM. The DQ line is then pulled to V
for t
milliseconds and then returned to
PP
PPW
nominal voltage. The fast rise and fall time requirements for the programming pulse are required to prevent
damage during the transition between normal communication mode and programming mode.
Figure 10. Lock Secret, Set/Clear Overdrive Function Commands
18 of 20