- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382377 > PC89C660 (NXP Semiconductors N.V.) 80C51 8-bit Flash microcontroller family PDF資料下載
參數(shù)資料
| 型號(hào)： | PC89C660 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 80C51 8-bit Flash microcontroller family |
| 中文描述： | 80C51的8位閃存微控制器系列 |
| 文件頁(yè)數(shù)： | 64/89頁(yè) |
| 文件大?。?/td> | 491K |
| 代理商： | PC89C660 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)當(dāng)前第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)
Philips Semiconductors
Product data
P89C660/P89C662/P89C664/
P89C668
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
2002 Oct 28
64
FFFF
C000
8000
4000
2000
0000
BLOCK 4
16 KBYTES
BLOCK 3
16 KBYTES
BLOCK 2
16 KBYTES
BLOCK 1
8 KBYTES
BLOCK 0
8 KBYTES
PROGRAM
ADDRESS
BOOT ROM
(1 KBYTE)
FFFF
FC00
SU01264
89C664/89C668
89C662
89C660
Figure 55. Flash Memory Configurations
Power-On Reset Code Execution
The P89C660/662/664/668 contains two special Flash registers: the
BOOT VECTOR and the STATUS BYTE. At the falling edge of reset,
the P89C660/662/664/668 examines the contents of the Status
Byte. If the Status Byte is set to zero, power-up execution starts at
location 0000H, which is the normal start address of the user’s
application code. When the Status Byte is set to a value other than
zero, the contents of the Boot Vector is used as the high byte of the
execution address and the low byte is set to 00H. The factory
default setting is 0FCH, corresponds to the address 0FC00H for the
factory masked-ROM ISP boot loader. A custom boot loader can be
written with the Boot Vector set to the custom boot loader.
NOTE:
both bytes are erased at the same time. It is necessary
to reprogram the Boot Vector after erasing and
updating the Status Byte.
When erasing the Status Byte or Boot Vector,
Hardware Activation of the Boot Loader
The boot loader can also be executed by holding PSEN LOW, P2.7,
P2.6 high, EA greater than V
IH
(such as +5 V), and ALE HIGH (or
not connected) at the falling edge of RESET. This is the same effect
as having a non-zero status byte. This allows an application to be
built that will normally execute the end user’s code but can be
manually forced into ISP operation.
If the factory default setting for the Boot Vector (0FCH) is changed, it
will no longer point to the ISP masked-ROM boot loader code. If this
happens, the only possible way to change the contents of the Boot
Vector is through the parallel programming method, provided that
the end user application does not contain a customized loader that
provides for erasing and reprogramming of the Boot Vector and
Status Byte.
After programming the Flash, the status byte should be programmed
to zero in order to allow execution of the user’s application code
beginning at address 0000H.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PC8D52 | |
| PC8Q52 | PHOTOCOUPLER |
| PC8Q66Q | |
| PC910 | |
| PC910L0NSZ | PHOTOCOUPLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PC89HK | 功能描述:HARDWARE KIT PD8010 9010DKN RoHS:是 類別:RF/IF 和 RFID >> RF配件 系列:* 標(biāo)準(zhǔn)包裝:1 系列:* |
| PC8ADVA2M49PXHSA1 | 制造商:Infineon Technologies AG 功能描述:PAYMENT - Bulk |
| PC8ADVAKM49XHSA2 | 制造商:Infineon Technologies AG 功能描述:PAYMENT - Rail/Tube |
| PC8ADVAKM51XHSA1 | 制造商:Infineon Technologies AG 功能描述:PAYMENT - Rail/Tube |
| PC8ADVAKM51XHSA2 | 制造商:Infineon Technologies AG 功能描述:PAYMENT - Rail/Tube |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。