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參數(shù)資料
| 型號(hào)： | PIC18LF27J53-I/ML |
| 廠商： | Microchip Technology |
| 文件頁(yè)數(shù)： | 68/71頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC PIC MCU 128KB FLASH 28QFN |
| 產(chǎn)品培訓(xùn)模塊： | 8-bit PIC® Microcontroller Portfolio |
| 標(biāo)準(zhǔn)包裝： | 61 |
| 系列： | PIC® XLP™ 18F |
| 核心處理器： | PIC |
| 芯體尺寸： | 8-位 |
| 速度： | 48MHz |
| 連通性： | I²C，LIN，SPI，UART/USART，USB |
| 外圍設(shè)備： | 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 22 |
| 程序存儲(chǔ)器容量： | 128KB（64K x 16） |
| 程序存儲(chǔ)器類(lèi)型： | 閃存 |
| RAM 容量： | 3.8K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2 V ~ 2.75 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 10x10b/12b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 28-VQFN 裸露焊盤(pán) |
| 包裝： | 管件 |
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PIC18(L)F2X/4XK22
DS41412F-page 70
2010-2012 Microchip Technology Inc.
FIGURE 5-1:
PROGRAM MEMORY MAP AND STACK FOR PIC18(L)F2X/4XK22 DEVICES
5.1.1
PROGRAM COUNTER
The Program Counter (PC) specifies the address of the
instruction to fetch for execution. The PC is 21 bits wide
and is contained in three separate 8-bit registers. The
low byte, known as the PCL register, is both readable
and writable. The high byte, or PCH register, contains
the PC<15:8> bits; it is not directly readable or writable.
Updates to the PCH register are performed through the
PCLATH register. The upper byte is called PCU. This
register contains the PC<20:16> bits; it is also not
directly readable or writable. Updates to the PCU
register are performed through the PCLATU register.
The contents of PCLATH and PCLATU are transferred
to the program counter by any operation that writes
PCL. Similarly, the upper two bytes of the program
counter are transferred to PCLATH and PCLATU by an
operation that reads PCL. This is useful for computed
offsets to the PC (see Section 5.2.2.1 “Computed
The PC addresses bytes in the program memory. To
prevent the PC from becoming misaligned with word
instructions, the Least Significant bit of PCL is fixed to
a value of ‘0’. The PC increments by two to address
sequential instructions in the program memory.
The CALL, RCALL, GOTO and program branch
instructions write to the program counter directly. For
these instructions, the contents of PCLATH and
PCLATU are not transferred to the program counter.
5.1.2
RETURN ADDRESS STACK
The return address stack allows any combination of up
to 31 program calls and interrupts to occur. The PC is
pushed onto the stack when a CALL or RCALL
instruction is executed or an interrupt is Acknowledged.
The PC value is pulled off the stack on a RETURN,
RETLW
or a RETFIE instruction. PCLATU and PCLATH
are not affected by any of the RETURN or CALL
instructions.
The stack operates as a 31-word by 21-bit RAM and a
5-bit Stack Pointer, STKPTR. The stack space is not
part of either program or data space. The Stack Pointer
is readable and writable and the address on the top of
the stack is readable and writable through the Top-of-
Stack (TOS) Special File Registers. Data can also be
pushed to, or popped from the stack, using these
registers.
PC<20:0>
Stack Level 1
Stack Level 31
Reset Vector
Low Priority Interrupt Vector
CALL,RCALL,RETURN
RETFIE,RETLW
21
0000h
0018h
On-Chip
Program Memory
High Priority Interrupt Vector
0008h
User
M
e
mory
S
pace
1FFFFFh
4000h
3FFFh
Read ‘0’
200000h
8000h
7FFFh
On-Chip
Program Memory
Read ‘0’
1FFFh
2000h
On-Chip
Program Memory
Read ‘0’
PIC18(L)F25K22
PIC18(L)F45K22
PIC18(L)F24K22
PIC18(L)F44K22
PIC18(L)F23K22
PIC18(L)F43K22
Read ‘0’
FFFFh
PIC18(L)F26K22
PIC18(L)F46K22
On-Chip
Program Memory
10000h
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| PIC18LF27J53T-I/ML | 功能描述:8位微控制器 -MCU USB 128KB Flash 4KB RAM 12 MIPS 12b ADC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC18LF27J53T-I/SO | 功能描述:8位微控制器 -MCU USB 128KB Flash 4KB RAM 12 MIPS 12b ADC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC18LF27J53T-I/SS | 功能描述:8位微控制器 -MCU USB 128KB Flash 4KB RAM 12 MIPS 12b ADC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC18LF320-I/S0 | 制造商:Microchip Technology Inc 功能描述: |
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