参数资料
型号: DSPIC30F2010-20I/SP
厂商: Microchip Technology
文件页数: 35/66页
文件大小: 0K
描述: IC DSPIC MCU/DSP 12K 28DIP
产品培训模块: Asynchronous Stimulus
标准包装: 15
系列: dsPIC™ 30F
核心处理器: dsPIC
芯体尺寸: 16-位
速度: 20 MIPS
连通性: I²C,SPI,UART/USART
外围设备: 高级欠压探测/复位,电机控制 PWM,QEI,POR,PWM,WDT
输入/输出数: 20
程序存储器容量: 12KB(4K x 24)
程序存储器类型: 闪存
EEPROM 大小: 1K x 8
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 2.5 V ~ 5.5 V
数据转换器: A/D 6x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 28-DIP(0.300",7.62mm)
包装: 管件
产品目录页面: 650 (CN2011-ZH PDF)
配用: DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
其它名称: DSPIC30F2010-20I/SPG
DSPIC30F201020ISG
DSPIC30F201020ISG-ND
DSPIC30F201020ISP
dsPIC30F Flash Programming Specification
DS70102K-page 40
2010 Microchip Technology Inc.
11.6
Erasing Program Memory in
Low-Voltage Systems
The procedure for erasing program memory (all code
memory and data memory) in low-voltage systems
(with VDD between 2.5 volts and 4.5 volts) is quite
different than the procedure for erasing program
memory in normal-voltage systems. Instead of using a
Bulk Erase operation, each region of memory must be
individually erased by row. Namely, all of the code
memory, executive memory and data memory must be
erased one row at a time. This procedure is detailed in
Due to security restrictions, the FBS, FSS and FGS
register cannot be erased in low-voltage systems.
Once any bits in the FGS register are programmed to
‘0’, they can only be set back to ‘1’ by performing a Bulk
Erase in a normal-voltage system. Alternatively, a Seg-
ment Erase operation can be performed instead of a
Bulk Erase.
Normal-voltage systems can also be used to erase
program memory as shown in Table 11-5. However,
since this method is more time-consuming and does
not clear the code-protect bits, it is not recommended.
Note:
Program memory must be erased before
writing any data to program memory.
TABLE 11-5:
SERIAL INSTRUCTION EXECUTION FOR ERASING PROGRAM MEMORY
(EITHER IN LOW-VOLTAGE OR NORMAL-VOLTAGE SYSTEMS)
Command
(Binary)
Data
(Hexadecimal)
Description
Step 1: Exit the Reset vector.
0000
040100
000000
GOTO 0x100
NOP
Step 2: Initialize NVMADR and NVMADRU to erase code memory and initialize W7 for row address updates.
0000
EB0300
883B16
883B26
200407
CLR
W6
MOV
W6, NVMADR
MOV
W6, NVMADRU
MOV
#0x40, W7
Step 3: Set NVMCON to erase 1 row of code memory.
0000
24071A
883B0A
MOV
#0x4071, W10
MOV
W10, NVMCON
Step 4: Unlock the NVMCON to erase 1 row of code memory.
0000
200558
883B38
200AA9
883B39
MOV
#0x55, W8
MOV
W8, NVMKEY
MOV
#0xAA, W9
MOV
W9, NVMKEY
Step 5: Initiate the erase cycle.
0000
0000
A8E761
000000
000000
A9E761
000000
BSET NVMCON, #WR
NOP
Externally time ‘P13a’ ms (see Section 13.0 “AC/DC Characteristics and
NOP
BCLR NVMCON, #WR
NOP
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