參數(shù)資料
型號(hào): 39504
廠商: Microchip Technology Inc.
英文描述: Section 4. Architecture
中文描述: 第4節(jié)。建筑
文件頁數(shù): 4/16頁
文件大?。?/td> 232K
代理商: 39504
PIC18C Reference Manual
DS39504A-page 4-4
2000 Microchip Technology Inc.
Figure 4-2:
General Enhanced MCU Block Diagram
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Instruction
Decode &
Control
OSC1/CLKIN
OSC2/CLKOUT
MCLR
V
DD
,V
SS
PORTA
PORTB
PORTC
RA4
RA5
RA6
RB0/INT0
RB1/INT1
RB2/INT2
RB3
RB<7:4>
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
Brown-out
Reset
Note 1:
Many of the general purpose I/O pins are multiplexed with one or more peripheral module functions. The multiplexing combinations are
device dependent.
RA3
RA2
RA1
RA0
Timing
Generation
4X PLL
Data Latch
DataRAM
(up to 4K
addressreach)
AddressLatch
Address<12>
12
Bank0,F
BSR
FSR0
FSR1
FSR2
inc/dec
logic
Decode
4
12
4
PCH
PCL
PCLATH
8
31 Level Stack
Program Counter
PRODL
PRODH
8 x 8 Multiply
W
8
BITOP
8
8
ALU<8>
8
Address Latch
ProgramMemory
(up to2M Bytes)
Data Latch
20
21
21
16
8
8
8
Table Pointer<21>
inc/dec logic
21
8
Data Bus<8>
TABLELATCH
8
Instruction
Register
12
3
ROMLATCH
PORTD
T1OSI
T1OSO
PCLATU
PCU
Precision
Bandgap
Reference
8
Addressable
USART
CCP’s
SyMaster
Serial Port
Timer0
Timer1
Timer2
A/D Converter
Timer3
Enhanced
CCP’s
Other
Peripherals
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
PORTE
RE0
RE1
RE2
RE3
RE4
RE5
RE6
RE7
Peripheral Modules (Note 1)
CAN
USB
PORTx
Rx0
Rx1
Rx2
Rx3
Rx4
Rx5
Rx6
Rx7
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