PSD813F1A-90JI STMicroelectronics, PSD813F1A-90JI Datasheet - Page 68

• Manufacturer Part Number: PSD813F1A-90JI
• Description: IC FLASH 1MBIT 90NS 52PLCC
• Manufacturer: STMicroelectronics

Specifications of PSD813F1A-90JI

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 1M (128K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-1976-5

PSD813F1A
Input Control Signals
The PSD provides the option to turn off the input
control signals (CNTL0, CNTL1, CNTL2, ALE, and
DBE) to the PLD to save AC power consumption.
These control signals are inputs to the PLD AND
array.
Table 32. APD Counter Operation
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APD Enable Bit
0
1
1
1
ALE PD Polarity
X
X
1
0
ALE Level
Pulsing
X
1
0
Not Counting
Counting (Generates PDN after 15 Clocks)
Counting (Generates PDN after 15 Clocks)
Not Counting
During Power Down Mode, or, if any of them are
not being used as part of the PLD logic equation,
these control signals should be disabled to save
AC power. They will be disconnected from the
PLD AND array by setting bits 2, 3, 4, 5, and 6 to
a ‘1’ in the PMMR2.
APD Counter