参数资料
型号: AT89C51AC3-RDTIM
厂商: Atmel
文件页数: 70/140页
文件大小: 0K
描述: IC 8051 MCU FLASH 64K 64VQFP
标准包装: 160
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 60MHz
连通性: SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 36
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 2.25K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 64-LQFP
包装: 托盘
2009 Microchip Technology Inc.
DS70286C-page 33
dsPIC33FJXXXGPX06/X08/X10
4.0
MEMORY ORGANIZATION
The
dsPIC33FJXXXGPX06/X08/X10
architecture
features separate program and data memory spaces
and buses. This architecture also allows the direct
access of program memory from the data space during
code execution.
4.1
Program Address Space
The program address memory space of the
dsPIC33FJXXXGPX06/X08/X10
devices
is
4M
instructions. The space is addressable by a 24-bit
value derived from either the 23-bit Program Counter
(PC) during program execution, or from table operation
or data space remapping as described in Section 4.6
User access to the program memory space is restricted
to the lower half of the address range (0x000000 to
0x7FFFFF). The exception is the use of TBLRD/TBLWT
operations, which use TBLPAG<7> to permit access to
the Configuration bits and Device ID sections of the
configuration memory space. Memory usage for the
dsPIC33FJXXXGPX06/X08/X10 of devices is shown in
FIGURE 4-1:
PROGRAM MEMORY FOR dsPIC33FJXXXGPX06/X08/X10 DEVICES
Note:
This data sheet summarizes the features
of the dsPIC33FJXXXGPX06/X08/X10
family of devices. However, it is not
intended to be a comprehensive reference
source. To complement the information in
this data sheet, refer to Section 3. “Data
Memory” (DS70202) and Section 4.
“Program Memory” (DS70203) in the
“dsPIC33F Family Reference Manual”,
which is available from the Microchip web
site (www.microchip.com).
Reset Address
0x000000
0x0000FE
0x000002
0x000100
Device Configuration
User Program
Flash Memory
0x00AC00
0x00ABFE
(22K instructions)
0x800000
0xF80000
Registers
0xF80017
0xF80010
DEVID (2)
0xFEFFFE
0xFF0000
0xFFFFFE
0xF7FFFE
Unimplemented
(Read ‘0’s)
GOTO
Instruction
0x000004
Reserved
0x7FFFFE
Reserved
0x000200
0x0001FE
0x000104
Alternate Vector Table
Reserved
Interrupt Vector Table
Reset Address
Device Configuration
Registers
DEVID (2)
Unimplemented
(Read ‘0’s)
GOTO
Instruction
Reserved
Alternate Vector Table
Reserved
Interrupt Vector Table
Reset Address
Device Configuration
User Program
Flash Memory
(88K instructions)
Registers
DEVID (2)
GOTO
Instruction
Reserved
Alternate Vector Table
Reserved
Interrupt Vector Table
dsPIC33FJ64GPXXX
dsPIC33FJ128GPXXX
dsPIC33FJ256GPXXX
Configuration
Memor
y
S
pace
User
Memory
S
pace
0x015800
0x0157FE
Note:
Memory areas are not shown to scale.
User Program
(44K instructions)
Flash Memory
(Read ‘0’s)
Unimplemented
0x02AC00
0x02ABFE
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