參數(shù)資料
型號: PIC16LF1933-E/SP
廠商: Microchip Technology
文件頁數(shù): 25/40頁
文件大?。?/td> 0K
描述: MCU PIC 8BIT 4K FLASH 28SDIP
標(biāo)準(zhǔn)包裝: 15
系列: PIC® XLP™ 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 32MHz
連通性: I²C,LIN,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,LCD,POR,PWM,WDT
輸入/輸出數(shù): 25
程序存儲器容量: 7KB(4K x 14)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 11x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 28-DIP(0.300",7.62mm)
包裝: 管件
2008 Microchip Technology Inc.
Advance Information
DS41360A-page 31
PIC16F193X/LF193X
7.4
Checksum Computation
The checksum is calculated by two different methods
dependent on the setting of the CP Configuration bit.
7.4.1
PROGRAM CODE PROTECTION
DISABLED
With the program code protection disabled, the
checksum is computed by reading the contents of the
PIC16F193X/PIC16LF193X program memory locations
and adding up the program memory data starting at
address 0000h, up to the maximum user addressable
location (e.g., 1FFFH for the PIC16F1936). Any Carry
bit exceeding 16 bits are ignored. Additionally, the
relevant bits of the Configuration Words are added to
the checksum. All unimplemented Configuration bits
are masked to ‘0’.
EXAMPLE 7-1:
CHECKSUM COMPUTED WITH PROGRAM CODE PROTECTION DISABLED
(PIC16F1936)
EXAMPLE 7-2:
CHECKSUM COMPUTED WITH PROGRAM CODE PROTECTION DISABLED
(PIC16LF1936)
TABLE 7-1:
CONFIGURATION WORD
MASK VALUES
Device
Config. Word 1
Mask
Config. Word 2
Mask
PIC16F1933
3FFFh
3733h
PIC16LF1933
3FFFh
3703h
PIC16F1934
3FFFh
3733h
PIC16LF1934
3FFFh
3703h
PIC16F1936
3FFFh
3733h
PIC16LF1936
3FFFh
3703h
PIC16F1937
3FFFh
3733h
PIC16LF1937
3FFFh
3703h
PIC16F1938
3FFFh
3733h
PIC16LF1938
3FFFh
3703h
PIC16F1939
3FFFh
3733h
PIC16LF1939
3FFFh
3703h
Note:
Data
memory
does
not
effect
the
checksum.
PIC16F1936
Sum of Memory addresses 0000h-1FFFh
2534h
Configuration Word 1
2D83h
Configuration Word 1 mask
3FFFh
Configuration Word 2
3AEFh
Configuration Word 2 mask
3733h
Checksum
= 2534h + (2D83h and 3FFFh) + (3AEFh and 3733h)
= 2534h + 2D83h + 3223h
= 84DAh
PIC16LF1936
Sum of Memory addresses 0000h-1FFFh
2534h
Configuration Word 1
2D83h
Configuration Word 1 mask
3FFFh
Configuration Word 2
3AFFh
Configuration Word 2 mask(1)
3703h
Checksum = 2534h + (2D83h and 3FFFh) + (3AFFh and 3703h)
= 2534h + 2D83h + 3203h
= 84BAh
Note 1: In PIC16LF193X devices, the VCAPEN<1:0> bits are not implemented in Configuration Word 2 and the
Configuration Word 2 mask is 3703h.
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PDF描述
PIC16LF1933-I/MV IC MCU 8BIT 7KB FLASH 28UQFN
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