MC68HC711E20CFN3 Freescale Semiconductor, MC68HC711E20CFN3 Datasheet - Page 92
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MC68HC711E20CFN3
Manufacturer Part Number
MC68HC711E20CFN3
Description
IC MCU 3MHZ 20K OTP 52-PLCC
Manufacturer
Freescale Semiconductor
Series
HC11r
Specifications of MC68HC711E20CFN3
Core Processor
HC11
Core Size
8-Bit
Speed
3MHz
Connectivity
SCI, SPI
Peripherals
POR, WDT
Number Of I /o
38
Program Memory Size
20KB (20K x 8)
Program Memory Type
OTP
Eeprom Size
512 x 8
Ram Size
768 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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC711E20CFN3
Manufacturer:
FREESCALE
Quantity:
4 463
Company:
Part Number:
MC68HC711E20CFN3
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Operating Modes and On-Chip Memory
4.5 EPROM/OTPROM
Technical Data
92
CME — Clock Monitor Enable Bit
Bit 2 — Not implemented
CR[1:0] — COP Timer Rate Select Bits
Certain devices in the M68HC11 E series include on-chip
EPROM/OTPROM. For instance:
Standard MC68HC71E9 and MC68HC711E20 devices are shipped with
the EPROM/OTPROM contents erased (all 1s). The programming
operation programs 0s. Windowed devices must be erased using a
suitable ultraviolet light source before reprogramming. Depending on the
light source, erasing can take from 15 to 45 minutes.
Using the on-chip EPROM/OTPROM programming feature requires an
external 12-volt nominal power supply (V
accomplished using the EPROM/OTPROM programming register
(PPROG).
PPROG is the combined EPROM/OTPROM and EEPROM
programming register on all devices with EPROM/OTPROM except the
MC68HC711E20. For the MC68HC711E20, there is a separate register
for EPROM/OTPROM programming called the EPROG register.
Refer to
Always reads 0
The internal E clock is divided by 2
watchdog system. These control bits determine a scaling factor for
the watchdog timer. Refer to
•
•
•
The MC68HC711E9 devices contain 12 Kbytes of on-chip
EPROM (OTPROM in non-windowed package).
The MC68HC711E20 has 20 Kbytes of EPROM (OTPROM in
non-windowed package).
The MC68HC711E32 has 32 Kbytes of EPROM (OTPROM in
non-windowed package).
Operating Modes and On-Chip Memory
Section 5. Resets and
Section 5. Resets and
Interrupts.
15
before it enters the COP
PPE
). Normal programming is
M68HC11E Family — Rev. 3.2
Interrupts.
MOTOROLA
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