參數(shù)資料
型號(hào)： PIC18F25K20-I/ML
廠商： Microchip Technology
文件頁(yè)數(shù)： 3/42頁(yè)
文件大?。?/td> 0K
描述： IC PIC MCU FLASH 16KX16 28QFN
產(chǎn)品培訓(xùn)模塊： PIC18 K-Series
XLP Deep Sleep Mode
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： 64MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，HLVD，POR，PWM，WDT
輸入/輸出數(shù)： 24
程序存儲(chǔ)器容量： 32KB（16K x 16）
程序存儲(chǔ)器類(lèi)型： 閃存
EEPROM 大小： 256 x 8
RAM 容量： 1.5K 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-VQFN 裸露焊盤(pán)
包裝： 管件
產(chǎn)品目錄頁(yè)面： 656 (CN2011-ZH PDF)
配用： AC164112-ND - VOLTAGE LIMITER MPLAB ICD2 VPP
AC164322-ND - MODULE SOCKET MPLAB PM3 28/44QFN
2009 Microchip Technology Inc.
Advance Information
DS41297F-page 11
PIC18F2XK20/4XK20
2.6
Entering and Exiting Low-Voltage
ICSP Program/Verify Mode
When the LVP Configuration bit is ‘1’ (see Section 5.3
the
Low-
Voltage ICSP mode is enabled. As shown in Figure 2-14,
Low-Voltage ICSP Program/Verify mode is entered by
holding PGC and PGD low, placing a logic high on PGM
and then raising MCLR/VPP/RE3 to VIH. In this mode, the
RB5/PGM pin is dedicated to the programming function
and ceases to be a general purpose I/O pin. Figure 2-15
shows the exit sequence.
The sequence that enters the device into the Program/
Verify mode places all unused I/Os in the high-impedance
state.
FIGURE 2-14:
ENTERING LOW-VOLTAGE
PROGRAM/VERIFY MODE
FIGURE 2-15:
EXITING LOW-VOLTAGE
PROGRAM/VERIFY MODE
2.7
Serial Program/Verify Operation
The PGC pin is used as a clock input pin and the PGD
pin is used for entering command bits and data input/
output during serial operation. Commands and data are
transmitted on the rising edge of PGC, latched on the
falling edge of PGC and are Least Significant bit (LSb)
first.
2.7.1
4-BIT COMMANDS
All instructions are 20 bits, consisting of a leading 4-bit
command followed by a 16-bit operand, which depends
on the type of command being executed. To input a
command, PGC is cycled four times. The commands
needed for programming and verification are shown in
Depending on the 4-bit command, the 16-bit operand
represents 16 bits of input data or 8 bits of input data
and 8 bits of output data.
Throughout this specification, commands and data are
presented as illustrated in Table 2-7. The 4-bit com-
mand is shown Most Significant bit (MSb) first. The
command operand, or “Data Payload”, is shown
<MSB><LSB>. Figure 2-16 demonstrates how to
serially present a 20-bit command/operand to the
device.
2.7.2
CORE INSTRUCTION
The core instruction passes a 16-bit instruction to the
CPU core for execution. This is needed to set up
registers as appropriate for use with other commands.
TABLE 2-6:
COMMANDS FOR
PROGRAMMING
MCLR/VPP/RE3
P12
PGD
PGD = Input
PGC
PGM
P15
VDD
VIH
MCLR/VPP/RE3
P16
PGD
PGD = Input
PGC
PGM
P18
VDD
VIH
Description
4-Bit
Command
Core Instruction
(Shift in16-bit instruction)
0000
Shift out TABLAT register
0010
Table Read
1000
Table Read, post-increment
1001
Table Read, post-decrement
1010
Table Read, pre-increment
1011
Table Write
1100
Table Write, post-increment by 2
1101
Table Write, start programming,
post-increment by 2
1110
Table Write, start programming
1111
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PIC18F25K20T-I/ML 功能描述:8位微控制器 -MCU 32KB Flash 1536B RAM 25 I/O 8B RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度: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
PIC18F25K20T-I/SO 功能描述:8位微控制器 -MCU 32KB Flash 1536B RAM 25 I/O 8B RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度: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
PIC18F25K20T-I/SS 功能描述:8位微控制器 -MCU 32KB Flash 1536B RAM 25 I/O 8B RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度: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
PIC18F25K22-E/ML 功能描述:8位微控制器 -MCU 32KB Flash 1536B RAM 8B nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度: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
PIC18F25K22-E/SO 功能描述:8位微控制器 -MCU 32KB Flash 1536B RAM 8B nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度: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
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