PSD913212JIT ST Microelectronics, PSD913212JIT Datasheet - Page 60

• Manufacturer Part Number: PSD913212JIT
• Description: Flash In-System Programmable ISP Peripherals For 8-bit MCUs
• Manufacturer: ST Microelectronics

The
PSD9XX
Functional
Blocks
(cont.)
56
PSD9XX Family
Figure 23. APD Logic Block
Figure 24. Enable Power Down Flow Chart
APD EN
PMMR0 BIT 1=1
ALE
RESET
CSI
CLKIN
DISABLE
MAIN FLASH/
SECONDARY FLASH /SRAM
TRANSITION
DETECTION
DETECT
EDGE
No
Disable desired inputs to PLD
and PMMR2 bits 2 through 6.
by setting PMMR0 bit 4
Set PMMR0 Bit 1 = 1
PSD in Power
OPTIONAL
for 15 CLKIN
Enable APD
ALE/AS idle
Down Mode
clocks?
RESET
CLR
COUNTER
APD
Yes
PD
PD
DISABLE BUS
INTERFACE
PLD
Preliminary Information
SECONDARY
FLASH SELECT
MAIN FLASH
SELECT
POWER DOWN
( PDN )
SRAM SELECT
SELECT