MC68HC11E0CFN3 Freescale Semiconductor, MC68HC11E0CFN3 Datasheet - Page 223

MC68HC11E0CFN3

Manufacturer Part Number
MC68HC11E0CFN3
Description
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC68HC11E0CFN3

Cpu Family
HC11
Device Core Size
8b
Frequency (max)
3MHz
Interface Type
SCI/SPI
Program Memory Type
ROMLess
Program Memory Size
Not Required
Total Internal Ram Size
512Byte
# I/os (max)
38
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
3V
On-chip Adc
8-chx8-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
52
Package Type
PLCC
Lead Free Status / Rohs Status
Not Compliant

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100
101
102
103
104
105
106
Freescale Semiconductor
52 D000
53 FFFF
54
55 0000
56 01FF
57
58
59
60 0DB0
61 021B
62
63 1068
64
65
66
67 BF00
68
69
70
71
72
73
74 BF00 7EBF13
75 BF03
76
77
78
79
80
81
82
83
84
85
86
87
88 BF03 CE1000
89 BF06 18A600
90 BF09 1F2E80FC
91 BF0D A72F
92 BF0F 1808
93 BF11 20F3
94
95
96
97
98
99
EPRMSTR
EPRMEND
*
RAMSTR
RAMEND
* DELAY CONSTANTS
*
DELAYS
DELAYF
*
PROGDEL
*
****************************************************
****************************************************
* Next two instructions provide a predictable place
* to call PROGRAM and UPLOAD even if the routines
* change size in future versions.
*
PROGRAM
UPLOAD
****************************************************
* UPLOAD - Utility subroutine to send data from
* inside the MCU to the host via the SCI interface.
* Prior to calling UPLOAD set baud rate, turn on SCI
* and set Y=first address to upload.
* Bootloader leaves baud set, SCI enabled, and
* Y pointing at EPROM start ($D000) so these default
* values do not have to be changed typically.
* Consecutive locations are sent via SCI in an
* infinite loop. Reset stops the upload process.
****************************************************
UPLOOP
****************************************************
* PROGRAM - Utility subroutine to program EPROM.
* Prior to calling PROGRAM set baud rate, turn on SCI
* set X=2ms prog delay constant, and set Y=first
* address to program. SP must point to RAM.
* Bootloader leaves baud set, SCI enabled, X=4200
* and Y pointing at EPROM start ($D000) so these
* default values don't have to be changed typically.
* Delay constant in X should be equivalent to 2 ms
*
* An external voltage source is required for EPROM
* programming.
at 2.1 MHz X=4200; at 1 MHz X=2000.
EQU
EQU
EQU
EQU
EQU
EQU
EQU
JMP
EQU
LDX
LDAA
BRCLR
STAA
INY
BRA
M68HC11 Bootstrap Mode, Rev. 1.1
$D000
$FFFF
$0000
$01FF
3504
539
4200
PRGROUT
*
#$1000
0,Y
SCSR,X $80 *
SCDAT,X
UPLOOP
ORG
At 2.1 MHz
$BF00
Start of EPROM
End of EPROM
Delay at slow baud
Delay at fast baud
2 ms programming delay
EPROM programming utility
Upload utility
Point to internal registers
Read byte
Wait for TDRE
Send it
Next...
Listing 3. MC68HC711E9 Bootloader ROM
223

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