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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉锛� | PIC16LF724-I/P |
| 寤犲晢锛� | Microchip Technology |
| 鏂囦欢闋佹暩(sh霉)锛� | 83/274闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC PIC MCU FLASH 7KB 40-PDIP |
| 鐢�(ch菐n)鍝佸煿瑷撴ā濉婏細 | XLP Deep Sleep Mode 8-bit PIC® Microcontroller Portfolio |
| 妯欐簴鍖呰锛� | 10 |
| 绯诲垪锛� | PIC® XLP™ 16F |
| 鏍稿績铏曠悊鍣細 | PIC |
| 鑺珨灏哄锛� | 8-浣� |
| 閫熷害锛� | 20MHz |
| 閫ｉ€氭€э細 | I²C锛孲PI锛孶ART/USART |
| 澶栧湇瑷倷锛� | 娆犲妾㈡脯/寰╀綅锛孭OR锛孭WM锛學DT |
| 杓稿叆/杓稿嚭鏁�(sh霉)锛� | 36 |
| 绋嬪簭瀛樺劜鍣ㄥ閲忥細 | 7KB锛�4K x 14锛� |
| 绋嬪簭瀛樺劜鍣ㄩ鍨嬶細 | 闁冨瓨 |
| RAM 瀹归噺锛� | 192 x 8 |
| 闆诲 - 闆绘簮 (Vcc/Vdd)锛� | 1.8 V ~ 3.6 V |
| 鏁�(sh霉)鎿�(j霉)杞夋彌鍣細 | A/D 14x8b |
| 鎸暕鍣ㄥ瀷锛� | 鍏�(n猫i)閮� |
| 宸ヤ綔婧害锛� | -40°C ~ 85°C |
| 灏佽/澶栨锛� | 40-DIP锛�0.600"锛�15.24mm锛� |
| 鍖呰锛� | 绠′欢 |
| 鐢�(ch菐n)鍝佺洰閷勯爜闈細 | 640 (CN2011-ZH PDF) |
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173
8246B鈥揂VR鈥�09/11
ATtiny2313A/4313
19. Self-Programming
19.1
Features
Self-Programming Enables MCU to Erase, Write and Reprogram Application Memory
Efficient Read-Modify-Write Support
Lock Bits Allow Application Memory to Be Securely Closed for Further Access
19.2
Overview
The device provides a self-programming mechanism for downloading and uploading program
code by the MCU itself. Self-Programming can use any available data interface and associated
protocol to read code and write (program) that code into program memory.
19.3
Lock Bits
Program memory can be protected from internal or external access. See 鈥淟ock Bits鈥� on page
19.4
Self-Programming the Flash
Program memory is updated in a page by page fashion. Before programming a page with the
data stored in the temporary page buffer, the page must be erased. The temporary page buffer
is filled one word at a time using SPM and the buffer can be filled either before the Page Erase
command or between a Page Erase and a Page Write operation:
1.
Either, fill the buffer before a Page Erase:
a.
Fill temporary page buffer
b.
Perform a Page Erase
c.
Perform a Page Write
2.
Or, fill the buffer after Page Erase:
a.
Perform a Page Erase
b.
Fill temporary page buffer
c.
Perform a Page Write
If only a part of the page needs to be changed, the rest of the page must be stored (for example
in the temporary page buffer) before the erase, and then be re-written.
The temporary page buffer can be accessed in a random sequence.
It is essential that the page address used in both the Page Erase and Page Write operation is
addressing the same page.
The SPM instruction is disabled by default but it can be enabled by programming the SELFPR-
GEN fuse (to 鈥�0鈥�).
19.4.1
Addressing the Flash During Self-Programming
The Z-pointer is used to address the SPM commands.
Bit
151413121110
9
8
ZH (R31)
Z15
Z14
Z13
Z12
Z11
Z10
Z9
Z8
ZL (R30)
Z7Z6Z5Z4Z3Z2Z1
Z0
765
43210
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鐩搁棞浠ｇ悊鍟�/鎶€琛撳弮鏁�(sh霉) |
鍙冩暩(sh霉)鎻忚堪 |
|---|---|
| PIC16LF724T-I/ML | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 7KB Flash Prog 16MHz Int Osc 1.8V-5.5V RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰ㄦ牸:SMD/SMT |
| PIC16LF724T-I/MV | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 7KB Flash RAM 192b nanoWatt RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰ㄦ牸:SMD/SMT |
| PIC16LF724T-I/PT | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 7KB Flash Prog 16MHz Int Osc 1.8V-5.5V RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰ㄦ牸:SMD/SMT |
| PIC16LF726-E/ML | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 14KBFlash Prog 16MHz Int Osc 1.8V-5.5V RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰ㄦ牸:SMD/SMT |
| PIC16LF726-E/SO | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 14KBFlash Prog 16MHz Int Osc 1.8V-5.5V RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰ㄦ牸:SMD/SMT |
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