參數(shù)資料
型號： MC68HC705V8CFU
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP64
封裝： QFP-64
文件頁數(shù)： 92/172頁
文件大?。?/td> 890K
代理商： MC68HC705V8CFU
SECTION 2: MEMORY MAP
MOTOROLA
Page 15
MC68HC705V8 Specification Rev. 2.1
SECTION 2
MEMORY MAP
2.1
SINGLE-CHIP MODE MEMORY MAP
When the MC68HC705V8 is in the Single-Chip Mode the I/O and peripherals, user RAM,
EEPROM and user EPROM are all active as shown in Figure 2-1.
Figure 2-1:
MC68HC705V8 Single-Chip Mode Memory Map
2.2
I/O AND CONTROL REGISTERS
The I/O and Control Registers reside in locations $0000-$003F. The overall organization of
these registers is shown in Figure 2-2. The bit assignments for each register are shown in
Figure 2-3, Figure 2-4, Figure 2-5, and Figure 2-6. Reading from unimplemented bits will
return unknown states, and writing to unimplemented bits will be ignored.
0704
0703
User Vectors EPROM
16 Bytes
Bootload/ Factory test
code
ROM 1008 Bytes
16383
16368
16367
Stack
(64 Bytes)
User RAM
320 Bytes
Reset Vector (Low Byte)
Reset Vector (High Byte)
SWI Vector (Low Byte)
SWI Vector (High Byte)
IRQ Vector (Low Byte)
IRQ Vector (High Byte)
16-Bit Timer Vector (Low Byte)
16-Bit Timer Vector (High Byte)
$3FF7
$3FF8
$3FF9
$3FFA
$3FFB
$3FFC
$3FFD
$3FFE
$3FFF
MDLC (Low Byte)
$003F
$0000
$0100
$00FF
0255
0256
I/O
64 Bytes
0064
0063
0000
$3FFF
$3FF0
$3FEF
$0040
$003F
$0000
User EPROM
12032 Bytes
I/O
Registers
64 Bytes
(See Figure 2-2)
$3FF6
MDLC (High Byte)
$3FF3
8-Bit Timer (Low Byte)
$3FF4
SPI (High Byte)
$3FF5
SPI (Low Byte)
$3FF2
8-Bit Timer (High Byte)
$3FF1
unused
$3FF0
COP Watchdog Timer
15360
15359
$3C00
$3BFF
$0D00
$0CFF
User EEPROM
128 Bytes
3328
3327
Unused
2624 Bytes
$02C0
$02BF
$0240
$023F
0575
0576
Mask Option Register
User RAM
(128 Bytes)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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