PSD4204F3 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

PSD4204F3

Flash In-System-Programmable Peripherals for 16-Bit MCUs

STMicroelectronics 

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Preliminary Information

The

PSD4000

Functional

Blocks

(cont.)

Figure 24. APD Logic Block

APD EN

PMMR0 BIT 1=1

TRANSITION

DETECTION

ALE

RESET

CSI

CLKIN

EDGE

DETECT

CLR PD

APD

COUNTER

PD

DISABLE MAIN AND

SECONDARY FLASH/SRAM

PSD4000 Series

DISABLE BUS

INTERFACE

SECONDARY

FLASH SELECT

PLD

MAIN FLASH SELECT

SRAM SELECT

POWER DOWN

(PDN) SELECT

Figure 25. Enable Power Down Flow Chart

RESET

Enable APD

Set PMMR0 Bit 1 = 1

OPTIONAL

Disable desired inputs to PLD

by setting PMMR0 bit 4

and PMMR2 bits 0.

No

ALE/AS idle

for 15 CLKIN

clocks?

Yes

PSD in Power

Down Mode

57

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