psd935g2 STMicroelectronics, psd935g2 Datasheet - Page 58

• Manufacturer Part Number: psd935g2
• Description: Configurable Memory System On A Chip For 8-bit Microcontrollers
• Manufacturer: STMicroelectronics

PSD935G2
The
PSD935G2
Functional
Blocks
(cont.)
Figure 24. APD Logic Block
Figure 25. Enable Power Down Flow Chart
APD EN
PMMR0 BIT 1=1
ALE
RESET
CSI
CLKIN
TRANSITION
DETECTION
SECONDARY FLASH/SRAM
DETECT
EDGE
DISABLE MAIN AND
No
Disable desired inputs to PLD
by setting PMMR0 bit 4
Set PMMR0 Bit 1 = 1
and PMMR2 bits 0.
PSD in Power
OPTIONAL
for 15 CLKIN
Enable APD
ALE/AS idle
Down Mode
clocks?
CLR
COUNTER
RESET
APD
Yes
PD
PD
DISABLE BUS
INTERFACE
PSD9XX Family
PLD
SECONDARY
FLASH SELECT
MAIN FLASH SELECT
SRAM SELECT
POWER DOWN
( PDN )
SELECT
57