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參數(shù)資料
| 型號(hào)： | MC68HC11KA4TS |
| 廠商： | Motorola, Inc. |
| 英文描述： | KPT 3C 3#16 PIN PLUG |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 18/68頁 |
| 文件大?。?/td> | 365K |
| 代理商： | MC68HC11KA4TS |
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MOTOROLA
18
MC68HC11KA4
MC68HC11KA4TS/D
Can be written only once in first 64 cycles out of reset in normal modes or at any time in special mode.
RAM[3:0] —Internal RAM Map Position
Specifies upper four bits of RAM address. At reset, RAM is mapped to $0000 along with register block.
REG[3:0] —128-Byte Register Block Map Position
Specifies upper four bits of register space address. At reset, registers are mapped to $0000.
CONFIG is made up of EEPROM cells and static working latches. The operation of the MCU is con-
trolled directly by these latches and not the actual EEPROM byte. When programming the CONFIG reg-
ister, the EEPROM byte is being accessed. When the CONFIG register is being read, the static latches
are being accessed.
These bits can be read at any time. The value read is the one latched into the register from the EE-
PROM cells during the last reset sequence. A new value programmed into this register cannot be read
until after a subsequent reset sequence. Unused bits always read as ones.
If SMOD = 1, CONFIG bits can be written at any time. If SMOD = 0 CONFIG bits can only be written
using the EEPROM programming sequence, and are neither readable nor active until latched via the
next reset.
ROMAD — ROM/EPROM Mapping Control
In single-chip mode ROMAD is forced to one out of reset.
0 = ROM/EPROM located at $2000–$7FFF ($2000–$9FFF in MC68HC11KA2)
1 = ROM/EPROM located at $A000–$FFFF ($8000–$FFFF in MC68HC11KA2)
Bit 6 — Not implemented
Always reads one
CLKX — XOUT Clock Enable
0 = XOUT pin disabled
1 = x clock driven out on the XOUT pin
PAREN — Pull-Up Assignment Register Enable
Refer to
6 Parallel Input/Output
.
NOSEC — Security Disable
NOSEC is invalid unless the security mask option is specified before the MCU is manufactured. If se-
curity mask option is omitted NOSEC always reads one.
0 = Security enabled
1 = Security disabled
INIT
—RAM and I/O Register Mapping
$003D
Bit 7
6
5
4
3
2
1
Bit 0
RAM3
RAM2
RAM1
RAM0
REG3
REG2
REG1
REG0
RESET:
0
0
0
0
0
0
0
0
CONFIG
—COP, ROM Mapping, EEPROM Enables
$003F
Bit 7
6
5
4
3
2
1
Bit 0
ROMAD
—
CLKX
PAREN
NOSEC
NOCOP
ROMON
EEON
RESET:
—
1
—
—
—
—
—
—
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