参数资料
型号: M68HC705UGANG
厂商: 飞思卡尔半导体(中国)有限公司
英文描述: High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
中文描述: 高密度互补金属氧化物半导体(HCMOS)微控制器
文件页数: 92/112页
文件大小: 809K
代理商: M68HC705UGANG
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 1.8V
DD
and PB5 is at logic one. RESET must be held low for 4064 cycles after POR
(power-on reset) or for a time t
RL
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
Flashing
1
0
0
1
PB0
REMARKS
O.K. (self-check is on-going)
Bad I/O
BAD RAM
BAD ROM
BAD IRQ
1
1
1
0
0
1
0
1
1=LED off, 0=LED on
TPG
90
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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