MC68HC711KS2MFN4 Freescale Semiconductor, MC68HC711KS2MFN4 Datasheet - Page 76

• Manufacturer Part Number: MC68HC711KS2MFN4
• Description: 32K EPROM - SLOW MODE
• Manufacturer: Freescale Semiconductor

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)
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
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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