STMicroelectronics switch/hub, mPSD Brochure

1

Feb 2003 www.st.com/micropsd

µ

µ

PSD

PSD

It’s All You Need.

2

www.st.com/micropsd

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ST’s New 8051

ST’s New 8051--

based MCU Family

based MCU Family

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Performance

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ST6

ST7

ST9

ST10

ST40 &

STPC

µPSD

Turbo

Q303

Q303

µPSD

NOW

NOW

8051 World

8051 World

N

E

W

!

N

E

W

!

ST5

3

www.st.com/micropsd

What is

What is µµ

PSD

PSD??

• Standard 8032 MCU Core

– (3) 16 bit timers
– (2) Ext Interrupts

• Large Dual Bank Flash

• Large SRAM

• Programmable Logic

• USB, Dual UARTs, I2C

• PWM, ADC, DDC

• Many I/O

• Built-in Superv isor

• ISP

– In-System Programming

• IAP

– In-Application Programming

Just add power

and crystal!

Just add power

and crystal!

8032

8032

CORE:

CORE:

w/UART&

w/UART&

WDOG TMR

WDOG TMR

2K, 8K, or

2K, 8K, or

32K Byte SRAM

32K Byte SRAM

64K, 128K, or

64K, 128K, or

256K Byte

256K Byte

MAIN FLASH

MAIN FLASH

16K or 32K Byte

16K or 32K Byte

2

2

nd

nd

FLASH

FLASH

DECODE &

DECODE &

MEM MNGR

MEM MNGR

PROGRAMMABLE

PROGRAMMABLE

LOGIC

LOGIC

I/O

I/O

USB

USB

1.1

1.1

2

2

nd

nd

UART

UART

I2C

I2C

DDC

DDC

PWM

PWM

ADC

ADC

Vcc

Vcc

MON

MON

PWR

PWR

MNG

MNG

JTAG ISP

JTAG ISP

8032

8032

CORE:

CORE:

w/UART&

w/UART&

WDOG TMR

WDOG TMR

2K, 8K, or

2K, 8K, or

32K Byte SRAM

32K Byte SRAM

64K, 128K, or

64K, 128K, or

256K Byte

256K Byte

MAIN FLASH

MAIN FLASH

16K or 32K Byte

16K or 32K Byte

2

2

nd

nd

FLASH

FLASH

DECODE &

DECODE &

MEM MNGR

MEM MNGR

PROGRAMMABLE

PROGRAMMABLE

LOGIC

LOGIC

I/O

I/O

USB

USB

1.1

1.1

2

2

nd

nd

UART

UART

I2C

I2C

DDC

DDC

PWM

PWM

ADC

ADC

Vcc

Vcc

MON

MON

PWR

PWR

MNG

MNG

JTAG ISP

JTAG ISP

4

www.st.com/micropsd

What makes

What makes µµ

PSD

PSD

different?

different?

• PSD Architecture … enhances capability of 8051

– PSD = Programmable System Device
– Dual bank Flash Memory … Superior IAP
– Memory Management … Seamless paging and memory placement
– Programmable Logic … Consolidate external logic chips
– JTAG ISP … perfect for lab and manufacturing

• Some µPSDs have Big Memory up to 288K bytes…

When is larger Flash and SRAM needed?

– The use of C language
– Elaborate user interfaces … menus, graphics, screens
– Multiple languages and fonts, data tables
– Faster data transfers
– Data recording

• Low Cost

– Save $ compared to other 8051 and 8-bit MCU devices with

larger SRAM and Flash Memories

5

www.st.com/micropsd

Unique

Unique µµ

PSD

PSD

features

features

• Excellent Memory Management

• Flexible Memory Allocation

• Remote Field Updates

• JTAG In System Programming

• Programmable Logic

PSD

Architecture !!!

PSD

Architecture !!!

6

www.st.com/micropsd

• Built-in Address Decoding PLD

– Map any µPSD memory sector to any address
– Easily convert existing 8051 designs into µPSD
– Total memory mapping flexibility for new designs

• Memory Paging is Easy using Decode PLD

– Break traditional 8051 64K Byte address limit imposed by only 16 address lines
– 8-bit page register is built into Decode PLD … it’s like having 8 more address lines
– Paging (or banking) is directly supported by most 8051 C compilers

Excellent Memory Management

Excellent Memory Management

64K

FFFF

Page 0

Page 0

32K Main

32K Main

Flash

Flash

Common to All Pages

Map here: SRAM, 2ndFlash, I/O, etc

0000

Page 1

Page 1

32K Main

32K Main

Flash

Flash

Page 2

Page 2

32K Main

32K Main

Flash

Flash

Page 3

Page 3

32K Main

32K Main

Flash

Flash

MAIN FLASH

MAI N FLASH

MAIN FLASH

8

Sectors

MAIN FLASH

MAI N FLASH

MAIN FLASH

MAIN FLASH

MAI N FLASH

MAIN FLASH

8

Sectors

2ndFLASH

2

2

nd

nd

FLASH

FLASH

4

Sectors

2ndFLASH

2

2

nd

nd

FLASH

FLASH

2ndFLASH

2

2

nd

nd

FLASH

FLASH

4

Sectors

SRAM

SRAM

SRAM

1

Sector

DECODE

PLD

DECODE

DECODE

PLD

PLD

Sector

Selects

Page

Register

8032
MCU

8032

8032

MCU

MCU

Address

Sector

Selects

Page 7

Page 7

32K Main

32K Main

Flash

Flash

7

www.st.com/micropsd

• 8051 Architecture uses a separate address space for code and for data

• Allocate dual banks of Flash to meet Application De mands

– The Decode PLD controls where Flash memory resides

• You decide how to split the Flash memory

Flexible Memory Allocation

Flexible Memory Allocation

MAIN FLASH

MAIN FLASH

MAIN FLASH

2

nd

FLASH

2

2

nd

nd

FLASH

FLASH

DATA

DATA

DATA

CODE

CODE

CODE

Big Code

(complex

algorithms)

Big Data

(printers, big

GUI, tables)

MAIN FLASH

MAIN FLASH

MAIN FLASH

2

nd

FLASH

2

2

nd

nd

FLASH

FLASH

CODE

CODE

CODE

DATA

DATA

DATA

MAIN FLASH

MAIN FLASH

MAIN FLASH

2

nd

FLASH

2

2

nd

nd

FLASH

FLASH

CODE

CODE

CODE

CODE

CODE

CODE

All Code

(like typical

flash 8051s)

Can use

EEPROM

Emulation

-OR -

-OR -

8

www.st.com/micropsd

• 8051s typically cannot write to “code” space

– Special µPSD register eliminates this limitation

• Typical Flash memory cannot be read and written

at the same time

– Dual Banks of Flash eliminate this limitation
– Read program from one bank while writing to the other bank

Remote Field Updates with IAP

Remote Field Updates with IAP

3. After IAP

2. During IAP

1. Before IAP

• Special Register temporarily re­classifies Main Flash as Data

• MCU now reads IAP program
from 2ndFlash while receiving
bytes of new program from
USB, UART, Modem, I2C, etc.
and writes the new program to
Main Flash

• Special Register classifies
Main Flash as Code again

• MCU now reading new
program from Main Flash

• MCU reading program
from Main Flash

USB, UART,

I

2

C, Modem…

Updated

Updated

Program

Program

MAIN

MAIN

FLASH

FLASH

OLD

OLD

CODE

CODE

2

2

nd

nd

Flash

Flash

DATA

DATA

8032

8032

MCU

MCU

READ &

WRITE

READ

ONLY

MAIN

MAIN

FLASH

FLASH

OLD

OLD

CODE

CODE

2

2

nd

nd

Flash

Flash

DATA

DATA

8032

8032

MCU

MCU

READ &

WRITE

READ

ONLY

READ

ONLY

MAIN

MAIN

FLASH

FLASH

TREAT

TREAT

AS DATA

AS DATA

2

2

nd

nd

Flash

Flash

CODE

CODE

8032

8032

MCU

MCU

READ &

WRITE

READ
ONLY

READ

ONLY

READ &

WRITE

MAIN

MAIN

FLASH

FLASH

TREAT

TREAT

AS DATA

AS DATA

2

2

nd

nd

Flash

Flash

CODE

CODE

8032

8032

MCU

MCU

READ &

WRITE

READ &

WRITE

READ
ONLY

READ
ONLY

READ

ONLY

READ

ONLY

READ &

WRITE

READ &

WRITE

MAIN

MAIN

FLASH

FLASH

2

2

nd

nd

Flash

Flash

DATA

DATA

8032

8032

MCU

MCU

READ &

WRITE

READ
ONLY

NEW

NEW

CODE

CODE

MAIN

MAIN

FLASH

FLASH

2

2

nd

nd

Flash

Flash

DATA

DATA

8032

8032

MCU

MCU

READ &

WRITE

READ
ONLY

READ
ONLY

NEW

NEW

CODE

CODE

NEW

NEW

CODE

CODE

9

www.st.com/micropsd

µµPSD

PSD

µµPSD

PSD

In

In--

System Programming (ISP)

System Programming (ISP)

• Program blank device, no interaction of 8032 MCU required

• Entire chip programs in 10-25 seconds

• JTAG serial connection is industry standard

• Speedy lab development and manufacturing

No sockets or

pre-programmed

parts needed

Last minute

changes are

OK

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Just-In-Time

Inventory

Management

JIT