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PIC18F4420-I/PT 参数 Datasheet PDF下载

PIC18F4420-I/PT图片预览
型号: PIC18F4420-I/PT
PDF下载: 下载PDF文件 查看货源
内容描述: 28 /40/ 44引脚增强型闪存微控制器与10位A / D和纳瓦技术 [28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology]
分类和应用: 闪存微控制器和处理器外围集成电路PC时钟
文件页数/大小: 412 页 / 6898 K
品牌: MICROCHIP [ MICROCHIP ]
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PIC18F2420/2520/4420/4520  
FIGURE 1-2:  
PIC18F4420/4520 (40/44-PIN) BLOCK DIAGRAM  
Data Bus<8>  
PORTA  
Table Pointer<21>  
RA0/AN0  
RA1/AN1  
Data Latch  
8
8
inc/dec logic  
21  
RA2/AN2/VREF-/CVREF  
RA3/AN3/VREF+  
RA4/T0CKI/C1OUT  
RA5/AN4/SS/HLVDIN/C2OUT  
OSC2/CLKO(3)/RA6  
OSC1/CLKI(3)/RA7  
Data Memory  
( 3.9 Kbytes )  
PCLATH  
PCLATU  
Address Latch  
20  
PCU PCH PCL  
Program Counter  
12  
Data Address<12>  
PORTB  
31-Level Stack  
STKPTR  
RB0/INT0/FLT0/AN12  
RB1/INT1/AN10  
RB2/INT2/AN8  
4
BSR  
12  
FSR0  
FSR1  
FSR2  
4
Address Latch  
Access  
Bank  
Program Memory  
(16/32 Kbytes)  
RB3/AN9/CCP2(1)  
RB4/KBI0/AN11  
RB5/KBI1/PGM  
RB6/KBI2/PGC  
RB7/KBI3/PGD  
12  
Data Latch  
inc/dec  
logic  
8
Table Latch  
Address  
Decode  
PORTC  
ROM Latch  
IR  
RC0/T1OSO/T13CKI  
RC1/T1OSI/CCP2(1)  
RC2/CCP1/P1A  
RC3/SCK/SCL  
RC4/SDI/SDA  
Instruction Bus <16>  
RC5/SDO  
RC6/TX/CK  
RC7/RX/DT  
8
State Machine  
Control Signals  
Instruction  
Decode and  
Control  
PRODH PRODL  
8 x 8 Multiply  
PORTD  
3
8
RD0/PSP0:RD4/PSP4  
RD5/PSP5/P1B  
RD6/PSP6/P1C  
W
BITOP  
8
8
8
Internal  
Oscillator  
Block  
RD7/PSP7/P1D  
OSC1(3)  
OSC2(3)  
T1OSI  
Power-up  
Timer  
8
8
Oscillator  
Start-up Timer  
ALU<8>  
8
INTRC  
Oscillator  
Power-on  
Reset  
8 MHz  
Oscillator  
Watchdog  
Timer  
T1OSO  
PORTE  
RE0/RD/AN5  
Precision  
Band Gap  
Reference  
Brown-out  
Reset  
Fail-Safe  
RE1/WR/AN6  
RE2/CS/AN7  
MCLR(2)  
VDD, VSS  
Single-Supply  
Programming  
In-Circuit  
MCLR/VPP/RE3(2)  
Clock Monitor  
Debugger  
Data  
EEPROM  
BOR  
Timer0  
Timer1  
MSSP  
Timer2  
Timer3  
HLVD  
ADC  
10-Bit  
Comparator  
ECCP1  
CCP2  
EUSART  
Note 1: CCP2 is multiplexed with RC1 when Configuration bit, CCP2MX, is set, or RB3 when CCP2MX is not set.  
2: RE3 is only available when MCLR functionality is disabled.  
3: OSC1/CLKI and OSC2/CLKO are only available in select oscillator modes and when these pins are not being used as digital I/O.  
Refer to Section 2.0 “Oscillator Configurations” for additional information.  
© 2008 Microchip Technology Inc.  
DS39631E-page 11