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PS402-01XX Datasheet(PDF) 2 Page - Microchip Technology

Part # PS402-01XX
Description  Single Chip Battery Manager - Nickel Chemistries
PDF  46 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PS402-01XX Datasheet(HTML) 2 Page - Microchip Technology

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PS402-01XX
DS21766A-page 2
 2003 Microchip Technology Inc.
1.0
PRODUCT OVERVIEW
The PS402 is a fully integrated IC for battery manage-
ment that combines a proprietary microcontroller core
together with monitoring/control algorithms and 3D cell
models stored in 12 Kbytes of on-chip OTP EPROM.
Additional features include: precision 15-bit A/D and
mixed signal circuitry. On-chip EEPROM is provided for
storage of user-customizable and "learned" battery
parameters. An industry standard 2-wire SMBus v1.1
interface supports host communication using standard
SBData v1.1 commands and status.
The PS402 can be configured to accommodate all
Nickel rechargeable battery chemistries including
Nickel Metal Hydride and Nickel Cadmium. Future
versions will be added to support Pb-Acid.
Additional integrated features include an optional, high
accuracy on-chip oscillator and temperature sensor.
Eight general purpose pins support charge or safety
control, SOC LED display or user-programmable digital
I/O.
Microchip’s PS402 achieves the highest Smart Battery
Data accuracy in a single IC, providing space and total
system component cost savings for a wide variety of
portable systems.
FIGURE 1-1:
PS402 INTERNAL BLOCK DIAGRAM
128 byte
EEPROM
128 byte
EEPROM
12 Kbyte
OTP EPROM
12 Kbyte
OTP EPROM
Regulator
Regulator
Voltage
Reference
and
Temperatur
e
Voltage
Reference
and
Temperature
Sensor
SMBus
Interface
SMBus
Interface
Microcontroller
Core
Microcontroller
Core
15-Bit
Sigma-Delta
Integrating
A/D Converter
15-Bit
Sigma-Delta
Integrating
A/D Converter
Analog
Input Mux
Analog
Input Mux
Programmabl
e
Digital
Programmable
Digital
Input/Output
Silicon Oscillator
Silicon Oscillator
ROSC
SMB-CLK
RSHN
VNTC
VDDA
8
VREFT
VDDD
VPP
SMB-DTA
VSSD
GPIO(7-0)
Digital Section
Analog Section
VSSA
RSHP
VC(1)



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