Cypress CY14B101K User Manual
Page 27
CY14B101K
Document Number: 001-06401 Rev. *I
Page 27 of 28
*I
2663934
GVCH/PYRS
02/24/09
Updated Features
Updated pin definition of WE
Removed AutoStore enable/disable section
Added Best practices
Updated “Reading the clock”, “Backup Power”, “Stopping and
starting the Oscillator” and “Alarm” descriptions under RTC
operation
Modified “Figure 4. RTC Recommended Component Configu-
ration”
Added footnotes 4, 5 and 6
Added default values to RTC Register Map” table
Updated flag register description in Register Map Detail” table
Added Industrial specs for 25ns and 35ns speed
Changed V
IH
from Vcc+0.3 to Vcc+0.5
Added “Data Retention and Endurance” table on page 15
Added Thermal resistance values
Added alternate parameters in the AC switching characteristics
table
Renamed t
OH
to t
OHA
Changed t
HRECALL
from 20 to 40ms
Changed t
RECALL
spec from 100
μs to 170μs (Including t
ss
of
70us)
Renamed t
AS
to t
SA
Renamed t
GHAX
to t
HA
Updated Figure 13, 14, 15 and 16
Renamed t
HLHX
to t
PHSB
Added truth table for SRAM operations
Document Title: CY14B101K 1 Mbit (128K x 8) nvSRAM With Real Time Clock
Document Number: 001-06401
REV.
ECN NO.
Orig. of Change
Submission
Date
Description of Change