MC68HC711E20CFN2

Manufacturer Part NumberMC68HC711E20CFN2
DescriptionIC MCU 20K 2MHZ OTP 52-PLCC
ManufacturerFreescale Semiconductor
SeriesHC11
MC68HC711E20CFN2 datasheets
 


Specifications of MC68HC711E20CFN2

Core ProcessorHC11Core Size8-Bit
Speed2MHzConnectivitySCI, SPI
PeripheralsPOR, WDTNumber Of I /o38
Program Memory Size20KB (20K x 8)Program Memory TypeOTP
Eeprom Size512 x 8Ram Size768 x 8
Voltage - Supply (vcc/vdd)4.5 V ~ 5.5 VData ConvertersA/D 8x8b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case52-PLCCLead Free Status / RoHS StatusContains lead / RoHS non-compliant
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Operating Modes and On-Chip Memory
EPGM — EPROM/OTPROM/EEPROM Programming Voltage Enable Bit
0 = Programming voltage to EEPROM array switched off
1 = Programming voltage to EEPROM array switched on
During EEPROM programming, the ROW and BYTE bits of PPROG are not used. If the frequency of the
E clock is 1 MHz or less, set the CSEL bit in the OPTION register. Recall that 0s must be erased by a
separate erase operation before programming. The following examples of how to program an EEPROM
byte assume that the appropriate bits in BPROT are cleared.
PROG
LDAB
#$02
STAB
$103B
STAA
$XXXX
LDAB
#$03
STAB
$103B
JSR
DLY10
CLR
$103B
2.5.1.3 EEPROM Bulk Erase
This is an example of how to bulk erase the entire EEPROM. The CONFIG register is not affected in this
example.
BULKE
LDAB
#$06
STAB
$103B
STAA
$XXXX
LDAB
#$07
STAB
$103B
JSR
DLY10
CLR
$103B
2.5.1.4 EEPROM Row Erase
This example shows how to perform a fast erase of large sections of EEPROM.
ROWE
LDAB
#$0E
STAB
$103B
STAB
0,X
LDAB
#$0F
STAB
$103B
JSR
DLY10
CLR
$103B
54
EELAT = 1
Set EELAT bit
Store data to EEPROM address
(for valid EEPROM address see memory
map for each device)
EELAT = 1, EPGM = 1
Turn on programming voltage
Delay 10 ms
Turn off high voltage and set
to READ mode
EELAT = 1, ERASE = 1
Set to BULK erase mode
Store data to any EEPROM address (for
valid EEPROM address see memory map
for each device)
EELAT = 1, EPGM = 1, ERASE = 1
Turn on high voltage
Delay 10 ms
Turn off high voltage and set
to READ mode
ROW = 1, ERASE = 1, EELAT = 1
Set to ROW erase mode
Write any data to any address in ROW
ROW = 1, ERASE = 1, EELAT = 1, EPGM = 1
Turn on high voltage
Delay 10 ms
Turn off high voltage and set
to READ mode
M68HC11E Family Data Sheet, Rev. 5.1
Freescale Semiconductor