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参数资料
型号： MC68HC11D0CFBE3
厂商： Freescale Semiconductor
文件页数： 58/124页
文件大小： 0K
描述： IC MCU 8BIT 3MHZ 44-QFP
标准包装： 480
系列： HC11
核心处理器： HC11
芯体尺寸： 8-位
速度： 3MHz
连通性： SCI，SPI
外围设备： POR，WDT
输入/输出数： 26
程序存储器类型： ROMless
RAM 容量： 192 x 8
电压 - 电源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振荡器型： 内部
工作温度： -40°C ~ 85°C
封装/外壳： 44-QFP
包装： 托盘
OPERATING MODES AND ON-CHIP MEMORY
TECHNICAL DATA
4-5
The bootloader program is contained in the 192-byte bootstrap ROM. This ROM,
which appears as internal memory space at locations $BF40–$BFFF, is enabled only
if the MCU is reset in special bootstrap mode.
Memory locations are the same for expanded multiplexed and single-chip modes, ex-
cept for ROM in expanded mode and the bootloader ROM in special bootstrap mode.
The on-board 192-byte RAM is initially located at $0040 after reset, but can be placed
at any other 4K boundary ($x040) by writing an appropriate value to the INIT register.
The 4 Kbyte ROM is located at $F000 through $FFFF in all modes except expanded
multiplexed, in which it is located at $7000. ROM can be located at $F000 in expanded
multiplexed by entering single-chip mode out of reset and setting the MDA bit in the
HPRIO register to 1, thereby entering expanded mode from internal ROM. Disable
ROM by clearing the ROMON bit in the CONFIG register.
Hardware priority is built into RAM and I/O remapping. Registers and RAM have prior-
ity over ROM. In the event of conflicts, the higher priority resource takes precedence.
The 192 bytes of fully static RAM store instructions, variables, and temporary data.
The direct addressing mode can access RAM locations using a one-byte address op-
erand, saving program memory space and execution time, depending on the applica-
tion. RAM contents are preserved during periods of processor inactivity by two
methods, both of which reduce power consumption.
In the software-based STOP mode, the clocks are stopped while VDD powers the
MCU. Because power supply current is directly related to operating frequency in
CMOS integrated circuits, only a very small amount of leakage exists when the clocks
are stopped.
$002B
TCLR
0
SCP1
SCP0
RCKB
SCR2
SCR1
SCR0
BAUD
$002C
R8
T8
0
M
WAKE
0
SCCR1
$002D
TIE
TCIE
RIE
ILIE
TE
RE
RWU
SBK
SCCR2
$002E
TDRE
TC
RDRF
IDLE
OR
NF
FE
0
SCSR
$002F
R7/T7
R6/T6
R5/T5
R4/T4
R3/T3
R2/T2
R1/T1
R0/T0
SCDR
$0030
Reserved
to
$0038
Reserved
$0039
0
IRQE
DLY
CME
0
CR1
CR0
OPTION
$003A
Bit 7
654321
Bit 0
COPRST
$003B
Reserved
$003C
RBOOT
SMOD
MDA
IRVNE
PSEL3
PSEL2
PSEL1
PSEL0
HPRIO
$003D
RAM3
RAM2
RAM1
RAM0
REG3
REG2
REG1
REG0
INIT
$003E
TILOP
0
OCCR
CBYP
DISR
FCM
FCOP
0
TEST1
$003F
00000
NOCOP
ROMON
0
CONFIG
Table 4-1 Register and Control Bit Assignments (Continued)
Bit 7
654321
Bit 0
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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MC68HC11D0CFN2 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Microcontrollers
MC68HC11D0CFN3 制造商: 功能描述: 制造商:undefined 功能描述:
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