MC68HC05X16 Datasheet, PDF (199/232 Pages) Freescale Semiconductor, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

Freescale Semiconductor, Inc.
Bootstrap mode
Y
PD3 set?
N
N
PD2 set?
Y
N
PD1 set?
Y
N
Red LED on
EPROM erased?
Y
Green LED on
PD1 set?
N
Erase EEPROM1
Red LED off
N
C
Parallel E/EEPROM bootstrap
Erased EPROM verification
Y
SEC bit active?
Red LED on
N
Y
PD4 set?
N
Y
PD2 set?
N
Reserved for
Motorola use
Serial RAM
load/execute
Jump to RAM
($0051)
Y
SEC bit active?
N
Y
PD4 set?
Red LED on
A
B
Figure B-3 Modes of operation flow chart
MC68HC05X16
MC68HC705X32
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15
B-15