psd813f1a STMicroelectronics, psd813f1a Datasheet - Page 68
psd813f1a
Manufacturer Part Number
psd813f1a
Description
Flash In-system Programmable Isp Peripherals For 8-bit Mcus, 5 V
Manufacturer
STMicroelectronics
Datasheet
1.PSD813F1A.pdf
(111 pages)
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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
68/111
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