PSD813F2 datasheet(19/110 Pages) STMICROELECTRONICS

Teilenummer	PSD813F2

Bauteilbeschribung	Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V

PDF	110 Pages

Scroll/Zoom	100%

Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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19 / 110 page

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PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2

DETAILED OPERATION

As shown in Figure 5., page 14, the PSD consists

of six major types of functional blocks:

■

Memory Blocks

■

PLD Blocks

■

MCU Bus Interface

■

I/O Ports

■

Power Management Unit (PMU)

■

JTAG Interface

The functions of each block are described in the

following sections. Many of the blocks perform

multiple functions, and are user configurable.

Memory Blocks

The PSD has the following memory blocks:

–

Primary Flash memory

–

Optional Secondary Flash memory

–

Optional SRAM

The Memory Select signals for these blocks origi-

nate from the Decode PLD (DPLD) and are user-

defined in PSDsoft Express.

Table 8. Memory Block Size and Organization

Primary Flash Memory

Secondary Flash Memory

SRAM

Sector

Number

Sector Size

(Bytes)

Sector Select

Signal

Sector Size

(Bytes)

Sector Select

Signal

SRAM Size

(Bytes)

SRAM Select

Signal

32K

FS0

16K

CSBOOT0

256K

RS0

32K

FS1

16K

CSBOOT1

32K

FS2

16K

CSBOOT2

32K

FS3

16K

CSBOOT3

32K

FS4

32K

FS5

32K

FS6

32K

FS7

Total

512K

8 Sectors

64K

4 Sectors

256K

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