MC68HC11E1CFN3 Freescale Semiconductor, MC68HC11E1CFN3 Datasheet - Page 243

• Manufacturer Part Number: MC68HC11E1CFN3
• Description: IC MCU 3MHZ 512 EEPROM 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11E1CFN3

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 3MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Type: ROMless
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 3 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 16 bit
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

7990 '**********************************************************************
7992 '*
7994 '*
7996 '*
7998 '*
7999 '**********************************************************************
8000 WHILE LOC(2) = 0
8005 Q$ = INKEY$: IF Q$ <> "" THEN 4900 'IF ANY KEY PRESSED, THEN ABORT
8010 WEND
8020 B$ = INPUT$(1, #2)
8030 RETURN
8490 '************************************************************************
8491 '*
8492 '*
8493 '*
8494 '************************************************************************
8500 IF K > 255 THEN HX$="Too big":GOTO 8530
8510 HX$=MID$(H$,K\16+1,1)
8520 HX$=HX$+MID$(H$,(K MOD 16)+1,1)
8530 RETURN
9499 '******************** BOOT CODE ****************************************
9500 DATA 86, 23
9510 DATA B7, 10, 02
9520 DATA 86, FE
9530 DATA B7, 10, 03
9540 DATA C6, FF
9550 DATA F7, 10, 07
9560 DATA CE, 0F, A0
9570 DATA 18, CE, E0, 00
9580 DATA 7E, BF, 00
9590 '***********************************************************************
Common Bootstrap Mode Problems
Reset Conditions
vs. Conditions
as Bootloaded
Program Starts
AN1060 — Rev. 1.0
MOTOROLA
SUBROUTINE TO READ IN ONE BYTE THROUGH THE COMM PORT OPENED
DECIMAL TO HEX CONVERSION
It is not unusual for a user to encounter problems with bootstrap mode
because it is new to many users. By knowing some of the common
difficulties, the user can avoid them or at least recognize and quickly
correct them.
It is common to confuse the reset state of systems and control bits with
the state of these systems and control bits when a bootloaded program
in RAM starts.
Freescale Semiconductor, Inc.
AS FILE #2.
RECEIVED.
KEYBOARD INPUT.
INPUT:
OUTPUT: HX$ - TWO CHARACTER STRING WITH HEX CONVERSION
For More Information On This Product,
Go to: www.freescale.com
'WAIT FOR COMM PORT INPUT
K - INTEGER TO BE CONVERTED
'LDAA
'STAA
'LDAA
'STAA
'LDAB
'STAB
'LDX
'LDY
'JMP
SUBROUTINE WILL BE ABORTED BY ANY
WAITS INDEFINITELY FOR THE BYTE TO BE
'UPPER NIBBLE
'LOWER NIBBLE
#$23
OPT2
#$FE
PORTC
#$FF
DDRC
#4000
#$E000
$BF00
RETURNS BYTE IN B$.
make port C wire or
light 1 LED on port C bit 0
make port C outputs
2msec at 2MHz
Start of BUFFALO 3.4
EPROM routine start address
USES Q$.
Application Note
243