STK11C68-5KF55M Cypress Semiconductor Corp, STK11C68-5KF55M Datasheet - Page 9

• Manufacturer Part Number: STK11C68-5KF55M
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK11C68-5KF55M

• Word Size: 8b
• Organization: 8Kx8
• Density: 64Kb
• Interface Type: Parallel
• Access Time (max): 55ns
• Operating Supply Voltage (typ): 5V
• Package Type: CDIP
• Operating Temperature Classification: Military
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: -55C to 125C
• Pin Count: 28
• Mounting: Through Hole
• Supply Current: 80mA
• Lead Free Status / RoHS Status: Compliant

Internally, RECALL is a two step procedure. First, the
SRAM data is cleared and second, the nonvolatile
information is transferred into the SRAM cells. The
RECALL operation in no way alters the data in the
EEPROM cells. The nonvolatile data can be recalled
an unlimited number of times.
On power-up, once V
age of 4.0V, a RECALL cycle is automatically initiated.
The voltage on the V
CC
CC
pin must not drop below 4.0V
exceeds the V
CC
sense volt-
4-39
operate properly. Due to this automatic RECALL ,
SRAM operation cannot commence until t
V
value.
If the STK11C68-M is in a WRITE state at the end of
power-up RECALL , the SRAM data will be corrupted.
To help avoid this situation, a 10K Ohm resistor should
be connected between W and system V
once it has risen above it in order for the RECALL to
CC
exceeds 4.0V. 4.0V is a typical, characterized
STK11C68-M
CC
RECALL
.
after