mc68hc11k4 Freescale Semiconductor, Inc, mc68hc11k4 Datasheet - Page 76
mc68hc11k4
Manufacturer Part Number
mc68hc11k4
Description
Mc68hc11k1 Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC11K4.pdf
(290 pages)
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Operating Modes and On-Chip Memory
4.4 System Initialization
Technical Data
76
SMOD = 0
SMOD = 1
Operating
Mode
Register
Address
$x03C
$x03D
$x03C
$x03D
$x03F
$x024
$x035
$x037
$x038
$x039
$x024
$x035
$x037
$x038
$x039
Table 4-1. Registers with Limited Write Access
Registers and bits that control initialization and the basic operation of the
MCU are protected against writes except under special circumstances.
Table 4-1
must be written within the first 64 cycles after reset.
Timer interrupt mask 2 (TMSK2)
Block protect register (BPROT)
EEPROM mapping register (INIT2)
System configuration options 2
System configuration
Highest priority I-bit interrupt
RAM and I/O map register (INIT)
Timer interrupt mask 2 (TMSK2)
Block protect register (BPROT)
EEPROM mapping register (INIT2)
System configuration options 2
System configuration options
Highest priority I-bit interrupt and
RAM and I/O map register (INIT)
System configuration register
register (OPT2)
options (OPTION)
and miscellaneous (HPRIO)
register (OPT2)
(OPTION)
miscellaneous (HPRIO)
(CONFIG)
Freescale Semiconductor, Inc.
For More Information On This Product,
Operating Modes and On-Chip Memory
Register Name
lists registers that can be written only once after reset or that
Go to: www.freescale.com
Bits [1:0], once only
Clear bits, once only
No, bits [7:4], once
No, bit 4, once only
Bits [5:4], bits [2:0],
Yes, once only
only
once only
in First 64 Cycles
Must be Written
—
—
—
—
—
—
—
—
—
Bits [7:2]
Set bits only
See OPT2
Bits [7:6], bit 3
See HPRIO
All, set or clear
All, set or clear
Bits [7:4]
See OPT2
All, set or clear
See HPRIO
All, set or clear
See CONFIG
M68HC11K Family
description
description
description
description
description
Anytime
Write
MOTOROLA
—
—
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