参数资料
型号: MC68HC705BS8FB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.2 MHz, MICROCONTROLLER, PQFP44
封装: PLASTIC, QFP-44
文件页数: 14/128页
文件大小: 9691K
代理商: MC68HC705BS8FB
12-4
MC68HC05BS8
OPERATING MODES
12
12.3
Bootstrap Mode
The bootstrap mode is provided in the EPROM part (MC68HC705BS8) 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 PB6 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 10K-bytes, from
location $1800 to $3FDF.
Refer to Appendix A for further details on MC68HC705BS8.
Table 12-2 Self-Check Report
PA4
PA3
PA1
PA0
REMARKS
Flashing
O.K. (self-check is on-going)
1
Bad port A
1
0
Bad port B
1
0
1
Bad port C
1
0
Bad RAM
1
0
1
Bad ROM
1
0
1
0
Bad IRQ
1
0
1
Bad KBI
0
1
Bad CTimer
0
1
0
Bad GPWM
1=LED off, 0=LED on
TPG
108
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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