參數(shù)資料
型號: PIC18F26K20-I/SS
廠商: Microchip Technology
文件頁數(shù): 16/42頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 32KX16 28-SSOP
產(chǎn)品培訓(xùn)模塊: XLP Deep Sleep Mode
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝: 47
系列: PIC® XLP™ 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 64MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,HLVD,POR,PWM,WDT
輸入/輸出數(shù): 24
程序存儲器容量: 64KB(32K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 1K x 8
RAM 容量: 3.8K 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 ~ 85°C
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
包裝: 管件
產(chǎn)品目錄頁面: 657 (CN2011-ZH PDF)
配用: AC164112-ND - VOLTAGE LIMITER MPLAB ICD2 VPP
AC164307-ND - MODULE SKT FOR PM3 28SSOP
2009 Microchip Technology Inc.
Advance Information
DS41297F-page 23
PIC18F2XK20/4XK20
3.5
Boot Block Programming
The code sequence detailed in Table 3-5 should be
used, except that the address used in “Step 2” will be in
the range of 000000h to 0007FFh.
3.6
Configuration Bits Programming
Unlike code memory, the Configuration bits are
programmed a byte at a time. The Table Write, Begin
Programming 4-bit command (‘1111’) is used, but only
8 bits of the following 16-bit payload will be written. The
LSB of the payload will be written to even addresses
and the MSB will be written to odd addresses. The
code sequence to program two consecutive configura-
tion locations is shown in Table 3-9. See Figure 3-5 for
the timing diagram.
TABLE 3-9:
SET ADDRESS POINTER TO CONFIGURATION LOCATION
FIGURE 3-8:
CONFIGURATION PROGRAMMING FLOW
Note:
The address must be explicitly written for
each byte programmed. The addresses
can not be incremented in this mode.
4-bit
Command
Data Payload
Core Instruction
Step 1: Direct access to config memory.
0000
8E A6
8C A6
84 A6
BSF
EECON1, EEPGD
BSF
EECON1, CFGS
BSF
EECON1, WREN
Step 2(1): Set Table Pointer for config byte to be written. Write even/odd addresses.
0000
1111
0000
1111
0000
0E 30
6E F8
0E 00
6E F7
0E 00
6E F6
<MSB ignored><LSB>
00 00
0E 01
6E F6
<MSB><LSB ignored>
00 00
MOVLW
30h
MOVWF
TBLPTRU
MOVLW
00h
MOVWF
TBLPRTH
MOVLW
00h
MOVWF
TBLPTRL
Load 2 bytes and start programming.
NOP - hold PGC high for time P9 and low for time P10.
MOVLW
01h
MOVWF
TBLPTRL
Load 2 bytes and start programming.
NOP - hold PGC high for time P9A and low for time P10.
Note 1:
Enabling the write protection of Configuration bits (WRTC = 0 in CONFIG6H) will prevent further writing of
Configuration bits. Always write all the Configuration bits before enabling the write protection for
Configuration bits.
Load Even
Configuration
Start
Program
MSB
Delay P9 and P10
Time for Write
LSB
Load Odd
Configuration
Address
Done
Start
Delay P9 and P10
Time for Write
Done
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