LTC6803-2 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC6803-2' PDF : 40 Pages View PDF
LTC6803-2/LTC6803-4
OPERATION
Table 16. Memory Bit Descriptions
NAME DESCRIPTION
VALUES
UV/OV COMPARATOR
VREF POWERED DOWN
CELL VOLTAGE
CDC
PERIOD
BETWEEN MEASUREMENTS MEASUREMENT TIME
0
(Default)
N/A (Comparator Off)
Standby Mode
Yes
N/A
1
N/A (Comparator Off)
No
13ms
CDC
Comparator Duty Cycle
2
13ms
No
3
130ms
No
13ms
13ms
4
500ms
No
13ms
5
130ms
Yes
21ms
6
500ms
Yes
21ms
7
2000ms
Yes
21ms
CELL10 10-Cell Mode
0 = 12-cell mode (default); 1 = 10-cell mode
LVLPL Level Polling Mode
0 = toggle polling (default); 1 = level polling
GPIO1 GPIO1 Pin Control
Write: 0 = GPIO1 pin pull-down on; 1 = GPIO1 pin pull-down off (default)
Read: 0 = GPIO1 pin at logic ‘0’; 1 = GPIO1 pin at logic ‘1’
GPIO2 GPIO2 Pin Control
Write: 0 = GPIO2 pin pull-down on; 1 = GPIO2 pin pull-down off (default)
Read: 0 = GPIO2 pin at logic ‘0’; 1 = GPIO2 pin at logic ‘1’
WDT
Watchdog Timer
Read: 0 = WDTB pin at logic ‘0’; 1 = WDTB pin at logic ‘1’
DCCx Discharge Cell x
x = 1..12 0 = turn off shorting switch for cell ‘x’ (default); 1 = turn on shorting switch
VUV
Undervoltage Comparison Voltage* Comparison voltage = (VUV –31) • 16 • 1.5mV (Default VUV = 0)
VOV
Overvoltage Comparison Voltage*
Comparison voltage = (VOV –32) • 16 • 1.5mV (Default VOV = 0)
MCxI
Mask Cell x Interrupts
x = 1..12 0 = enable interrupts for cell ‘x’ (default)
1 = turn off interrupts and clear flags for cell ‘x’
CxV
Cell x Voltage*
x = 1..12 12-bit ADC measurement value for cell ‘x’
cell voltage for cell ‘x’ = (CxV –512) • 1.5mV
reads as 0xFFF while A/D conversion in progress
CxUV Cell x Undervoltage Flag
x = 1..12 cell voltage compared to VUV comparison voltage
0 = cell ‘x’ not flagged for undervoltage condition; 1 = cell ‘x’ flagged
CxOV Cell x Overvoltage Flag
x = 1..12 cell voltage compared to VOV comparison voltage
0 = cell ‘x’ not flagged for overvoltage condition; 1 = cell ‘x’ flagged
ETMPx External Temperature Measurement* Temperature measurement voltage = (ETMPx –512) • 1.5mV
THSD Thermal Shutdown Status
0 = thermal shutdown has not occurred; 1 = thermal shutdown has occurred
Status cleared to ‘0’ on read of Thermal Register Group
REV
Revision Code
Device revision code
ITMP Internal Temperature Measurement* Temperature measurement voltage = (ITMP –512) • 1.5mV = 8mV • T(°K)
PEC
Packet Error Code
Cyclic redundancy check (CRC) value
REF
Reference Voltage for Diagnostics
This reference voltage = (REF –512) • 1.5mV. Normal range is within 2.1V to 2.9V
*Voltage equations use the decimal value of the registers, 0 to 4095 for 12-bit and 0 to 255 for 8-bit registers
680324f
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