MC68HC711E20CFS2 MOTOROLA [Motorola, Inc], MC68HC711E20CFS2 Datasheet - Page 52

• Manufacturer Part Number: MC68HC711E20CFS2
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Operating Modes and On-Chip Memory
2.4 EPROM/OTPROM
Data Sheet
52
ADPU — Analog-to-Digital Converter Power-Up Bit
CSEL — Clock Select Bit
IRQE — Configure IRQ for Edge-Sensitive Only Operation Bit
DLY — Enable Oscillator Startup Delay Bit
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
zeros. 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.
Refer to
Selects alternate clock source for on-chip EEPROM charge pump. Refer to
2.5.1 EEPROM and CONFIG Programming and Erasure
on EEPROM use.
CSEL also selects the clock source for the A/D converter, a function discussed
in
Refer to
Refer to
Always reads 0
The internal E clock is divided by 2
These control bits determine a scaling factor for the watchdog timer. Refer to
Section 5. Resets and
•
•
•
Section 3. Analog-to-Digital (A/D)
0 = The oscillator startup delay coming out of stop mode is bypassed and the
1 = A delay of approximately 4000 E-clock cycles is imposed as the MCU is
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).
Freescale Semiconductor, Inc.
For More Information On This Product,
MCU resumes processing within about four bus cycles.
started up from the stop power-saving mode. This delay allows the
crystal oscillator to stabilize.
Section 3. Analog-to-Digital (A/D)
Section 5. Resets and
Section 5. Resets and
Operating Modes and On-Chip Memory
Go to: www.freescale.com
Interrupts.
Interrupts.
Interrupts.
15
before it enters the COP watchdog system.
Converter.
Converter.
M68HC11E Family — Rev. 5
for more information
MOTOROLA