MPC82X52AE 参数 Datasheet PDF下载

型号：	MPC82X52AE
PDF下载：	下载PDF文件查看货源
内容描述：	8位微控制器 [8-bit micro-controller]
分类和应用：	微控制器
文件页数/大小：	72 页 / 952 K
品牌：	MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]

{ISPAS1,

ISPAS0}:

= ISP-Address-Start

{0,0}:

Set the ISP start address 1400

. (ISP code could take 3K bytes)

{0,1}:

Set the ISP start address 1800

. (ISP code could take 2K bytes)

{1,0}:

Set the ISP start address 1C00

. (ISP code could take 1K bytes)

{1,1}:

(default)

Express no ISP code.

HWBS: =

HardWare-Boot-Selector

(default)

Clearing the bit is to configure the device to boot from ISP program after power-up.

1:=

Setting the bit is to configure the device to boot normally from user’s application program

after power-up.

In fact, the boot entrance is determined by register

SWBS

from SFR

ISPCR

ignoring the boot

comes from RST-pin press, software-trigger, or power-up. However, if a boot happens and that

boot comes from power-up action, the device will first load the complement of the

HWBS

SWBS,

and decides the boot entrance according to the state of bit SWBS. So the HWBS is named

HardWare Boot Selector. It influence on power-up boot, but not on the boot from RST-pin or

software-trigger.

reserved1:=

The bit is reserved for afterward user, and should be left at set.

The user must not clear the bit; otherwise, there could be inadvertent effect impacted on

the device.

SB: =

Used to decide if the program code will be Scrambled while it is dumped.

Code dump from Writer is scrambled.

(default)

Code dump from Writer is transparent.

LOCK: =

Used to decide if the program code will be

Locked

against the popular writer.

Code dumping from Writer is locked.

(default)

Permit code dumping from general Writers.

NVM register: OR1

(Option

Bit-7

Bit-6

Bit-5

Bit-4

Bit-3

Bit-2

Bit-1

Bit-0

OR1 [7:1]: =

Used to set the boundary of IAP memory

The user’s application program can change only the IAP flash memory, neither of AP flash

memory itself, nor the ISP flash memory. The IAP memory is defined between address scope

OR1

[7:1]*512 and ISP-Address-Start. Setting the OR1 [7:1] 1111111

means no IAP memory.

NVM register: OR2

(Option

Bit-7

reserved1

Bit-6

OSCDN

Bit-5

Bit-4

reserved1

Bit-3

Bit-2

reserved1

Bit-1

ENROSC

Bit-0

reserved1

reserved1:=

The bit is reserved for afterward user, and should be left at set.

MEGAWIN

MPC82x52A Data Sheet

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