MC68HC705BD3 FREESCALE [Freescale Semiconductor, Inc], MC68HC705BD3 Datasheet - Page 92

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MC68HC705BD3

Manufacturer Part Number
MC68HC705BD3
Description
High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet

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11
11.3
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
(power-on reset) or for a time t
from location $2000 to $3EFF.
Refer to Section 15 for further details on MC68HC705BD3.
11-4
Bootstrap Mode
DD
and PB5 is at logic one. RESET must be held low for 4064 cycles after POR
1=LED off, 0=LED on
PB3
1
1
1
0
RL
Flashing
Table 11-2 Self-Check Report
PB1
for any other reset. The user EPROM consists of 7.75K-bytes,
1
0
0
1
OPERATING MODES
PB0
0
1
0
1
O.K. (self-check is on-going)
REMARKS
BAD ROM
BAD RAM
BAD IRQ
Bad I/O
MC68HC05BD3
TPG

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