LTP5901-IPR_15 Datasheet, PDF (26/32 Pages) Linear Technology – SmartMesh IP Network Manager 2.4GHz 802.15.4e Wireless Embedded Manager

LTP5901-IPR/LTP5902-IPR
Operation
Flash Data Retention
Eterna contains internal flash (non-volatile memory) to
store calibration results, unique ID, configuration settings
and software images. Flash retention is specified over the
operating temperature range. See Electrical Characteristics
and Absolute Maximum Ratings sections.
Non destructive storage above the operating temperature
range of –40°C to 85°C is possible; although, this may
result in a degradation of retention characteristics.
The degradation in flash retention for temperatures >85°C
can be approximated by calculating the dimensionless
acceleration factor using the following equation.
AF
=
e

Ea
k 
•



1
TUSE +273
−
1
TSTRESS +273






26
START-UP
POWER-ON
RESET
VSUPPLY > PoR
RESETn LOW AND
FLASH_P_ENn LOW
LOAD FUSE
SETTINGS
RESETn LOW AND
FLASH_P_ENn HIGH
SET RESETn HIGH AND
FLASH_P_ENn HIGH
FOR 125µs, THEN
SET RESETn LOW
SERIAL FLASH
EMULATION
RESET
RESETn HIGH
AND
FLASH_P_ENn
HIGH
DEASSERT
RESETn
BOOT
ASSERT RESETn ASSERT RESETn
DOZE
CPU AND
PERIPHERALS
INACTIVE
HW OR PMU EVENT
CPU
ACTIVE
ACTIVE
CPU
INACTIVE
ASSERT RESETn
LOW POWER SLEEP
COMMAND
DEEP SLEEP
OPERATION
INACTIVE
Figure 12. Eterna State Diagram
59012IPR F12
For more information www.linear.com/LTP5901-IPR or www.linear.com/LTP5902-IPR
59012iprf