MC68HC711E20CFN2 Freescale Semiconductor, MC68HC711E20CFN2 Datasheet - Page 85

• Manufacturer Part Number: MC68HC711E20CFN2
• Description: IC MCU 20K 2MHZ OTP 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711E20CFN2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• 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

4.4.3 System Initialization
M68HC11E Family — Rev. 3.2
MOTOROLA
SMOD = 0
SMOD = 1
Operating
Mode
Register
Address
$x03C
$x03D
$x03C
$x03D
$x024
$x035
$x039
$x024
$x035
$x039
Registers and bits that control initialization and the basic operation of the
MCU are protected against writes except under special circumstances.
Table 4-2
must be written within the first 64 cycles after reset.
Timer interrupt mask 2 (TMSK2)
Block protect register (BPROT)
System configuration
Highest priority I-bit interrupt
System configuration options
Highest priority I-bit interrupt and
RAM and I/O map register (INIT)
Timer interrupt mask 2 (TMSK2)
Block protect register (BPROT)
RAM and I/O map register (INIT)
Table 4-2. Write Access Limited Registers
options (OPTION)
and miscellaneous (HPRIO)
(OPTION)
miscellaneous (HPRIO)
Operating Modes and On-Chip Memory
Register Name
lists registers that can be written only once after reset or that
Bits [1:0], once only
Clear bits, once only
Bits [5:4], bits [2:0],
See HPRIO
Yes, once only
See HPRIO
once only
description
description
in First 64 Cycles
Must be Written
Operating Modes and On-Chip Memory
—
—
—
—
Bits [7:2]
Set bits only
Bits [7:6], bit 3
See HPRIO
All, set or clear
All, set or clear
All, set or clear
See HPRIO
All, set or clear
description
description
Technical Data
Anytime
Memory Map
Write
—
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