M48Z35AV-10PC1 STMicroelectronics, M48Z35AV-10PC1 Datasheet - Page 12

• Manufacturer Part Number: M48Z35AV-10PC1
• Description: IC NVSRAM 256KBIT 100NS 28DIP
• Manufacturer: STMicroelectronics
• Type: NVSRAMr

Specifications of M48Z35AV-10PC1

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 100ns
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-DIP Module (600 mil), 28-EDIP
• Word Size: 8b
• Organization: 32Kx8
• Density: 256Kb
• Interface Type: Parallel
• Access Time (max): 100ns
• Operating Supply Voltage (typ): 3.3V
• Package Type: PCDIP
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Operating Temp Range: 0C to 70C
• Pin Count: 28
• Mounting: Through Hole
• Supply Current: 50mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2882-5

Operating modes
12/25
Also, as V
2.5 V, an internal battery not OK (BOK) flag will be set. The BOK flag can be checked after
power up. If the BOK flag is set, the first WRITE attempted will be blocked. The flag is
automatically cleared after the first WRITE, and normal RAM operation resumes.
illustrates how a BOK check routine could be structured.
For more information on battery storage life refer to the application note AN1012.
Figure 8.
CC
BOK check routine example
rises, the battery voltage is checked. If the voltage is less than approximately
Doc ID 6784 Rev 8
(BATTERY OK)
COMPLEMENT BACK
TO SAME ADDRESS
AT ANY ADDRESS
WRITE ORIGINAL
ADDRESS AGAIN
SAME ADDRESS
DATA BACK TO
COMPLEMENT
WRITE DATA
POWER-UP
READ DATA
READ DATA
CONTINUE
AT SAME
OF FIRST
IS DATA
READ?
YES
NO
OF LOW BATTERY
(BATTERY LOW)
NOTIFY SYSTEM
CORRUPTED)
(DATA MAY BE
M48Z35AV
Figure 8
AI00607