參數(shù)資料
型號: MC68HC05BD3P
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數(shù): 105/112頁
文件大?。?/td> 864K
代理商: MC68HC05BD3P
MOTOROLA
11-4
MC68HC05BD3
OPERATING MODES
11
11.3
Bootstrap Mode
The bootstrap mode is provided in the EPROM part (MC68HC705BD3) as a mean of
self-programming its EPROM with minimal circuitry. It is entered on the rising edge of RESET if
IRQ pin is at 1.8VDD and PB5 is at logic one. RESET must be held low for 4064 cycles after POR
(power-on reset) or for a time tRL for any other reset. The user EPROM consists of 7.75K-bytes,
from location $2000 to $3EFF.
Refer to Section 15 for further details on MC68HC705BD3.
Table 11-2 Self-Check Report
PB3
PB1
PB0
REMARKS
Flashing
O.K. (self-check is on-going)
1
0
Bad I/O
1
0
1
BAD RAM
1
0
BAD ROM
0
1
BAD IRQ
1=LED off, 0=LED on
TPG
90
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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