參數(shù)資料
型號： DSPIC30F2023-20E/PT
廠商： Microchip Technology
文件頁數(shù)： 10/66頁
文件大小： 0K
描述： IC DSPIC MCU/DSP 12K 44TQFP
產(chǎn)品培訓模塊： Asynchronous Stimulus
特色產(chǎn)品： SMPS & Digital Power Conversion Solutions
標準包裝： 160
系列： dsPIC™ 30F
核心處理器： dsPIC
芯體尺寸： 16-位
速度： 20 MIPS
連通性： I²C，IrDA，LIN，SPI，UART/USART
外圍設備： 欠壓檢測/復位，POR，PWM，WDT
輸入/輸出數(shù)： 35
程序存儲器容量： 12KB（4K x 24）
程序存儲器類型： 閃存
RAM 容量： 512 x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 12x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 125°C
封裝/外殼： 44-TQFP
包裝： 托盤
產(chǎn)品目錄頁面： 650 (CN2011-ZH PDF)
配用： DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
dsPIC30F Flash Programming Specification
DS70102K-page 18
2010 Microchip Technology Inc.
5.7.2
PROGRAMMING METHODOLOGY
System operation Configuration bits are inherently
different than all other memory cells. Unlike code
memory,
data
EEPROM
and
code-protect
Configuration bits, the system operation bits cannot be
erased. If the chip is erased with the ERASEB
command, the system-operation bits retain their
previous value. Consequently, you should make no
assumption about the value of the system operation
bits. They should always be programmed to their
desired setting.
Configuration bits are programmed as a single word at
a time using the PROGC command. The PROGC
command specifies the configuration data and
Configuration register address. When Configuration
bits are programmed, any unimplemented bits must be
programmed with a ‘0’, and any reserved bits must be
programmed with a ‘1’.
Four PROGC commands are required to program all the
Configuration bits. Figure 5-5 illustrates the flowchart of
Configuration bit programming.
Note:
If the General Code Segment Code
Protect (GCP) bit is programmed to ‘0’,
code memory is code-protected and can-
not be read. Code memory must
be verified before enabling read protec-
Configuration Bits” for more information
about code-protect Configuration bits.
5.7.3
PROGRAMMING VERIFICATION
Once the Configuration bits are programmed, the
contents of memory should be verified to ensure that
the programming was successful. Verification requires
the Configuration bits to be read back and compared
against the copy held in the programmer’s buffer. The
READD command reads back the programmed
Configuration
bits
and
verifies
whether
the
programming was successful.
Any unimplemented Configuration bits are read-only
and read as ‘0’.
5.7.4
CODE-PROTECT CONFIGURATION
BITS
The FBS, FSS and FGS Configuration registers are
special Configuration registers that control the size and
level of code protection for the Boot Segment, Secure
Segment and General Segment, respectively. For each
segment, two main forms of code protection are
provided. One form prevents code memory from being
written (write protection), while the other prevents code
memory from being read (read protection).
The BWRP, SWRP and GWRP bits control write
protection; and BSS<2:0>, SSS<2:0> and GSS<1:0>
bits control read protection. The Chip Erase ERASEB
command sets all the code protection bits to ‘1’, which
allows the device to be programmed.
When write protection is enabled, any programming
operation to code memory will fail. When read
protection is enabled, any read from code memory will
cause a ‘0x0’ to be read, regardless of the actual
contents of code memory. Since the programming
executive always verifies what it programs, attempting
to program code memory with read protection enabled
will also result in failure.
It is imperative that all code protection bits are ‘1’ while
the device is being programmed and verified. Only after
the device is programmed and verified should any of
the above bits be programmed to ‘0’ (see Section 5.7
In addition to code memory protection, parts of data
EEPROM and/or data RAM can be configured to be
accessible only by code resident in the Boot Segment
and/or Secure Segment. The sizes of these “reserved”
sections are user-configurable, using the EBS,
RBS<1:0>, ESS<1:0> and RSS<1:0> bits.
Note 1: All bits in the FBS, FSS and FGS
Configuration registers can only be
programmed to a value of ‘0’. ERASEB is
the only way to reprogram code-protect
bits from ON (‘0’) to OFF (‘1’).
2: If any of the code-protect bits in FBS,
FSS, or FGS are clear, the entire device
must be erased before it can be
reprogrammed.
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