参数资料
型号: PIC18F44K20-I/PT
厂商: Microchip Technology
文件页数: 3/42页
文件大小: 0K
描述: IC PIC MCU FLASH 8KX16 44TQFP
产品培训模块: PIC18 K-Series
XLP Deep Sleep Mode
8-bit PIC® Microcontroller Portfolio
标准包装: 160
系列: PIC® XLP™ 18F
核心处理器: PIC
芯体尺寸: 8-位
速度: 64MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,HLVD,POR,PWM,WDT
输入/输出数: 35
程序存储器容量: 16KB(8K x 16)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 768 x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 3.6 V
数据转换器: A/D 14x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-TQFP
包装: 托盘
产品目录页面: 643 (CN2011-ZH PDF)
配用: AC164112-ND - VOLTAGE LIMITER MPLAB ICD2 VPP
DM164124-ND - KIT STARTER FOR PIC18F4XK20
AC164305-ND - MODULE SKT FOR PM3 44TQFP
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
相关PDF资料
PDF描述
PIC18F25K20-E/SO IC PIC MCU FLASH 16KX16 28-SOIC
PIC16LF1937-I/PT IC PIC MCU FLASH 512KX14 44-TQFP
PIC16F1938-I/SO IC MCU 8BIT FLASH 28SOIC
PIC16LF77T-I/PTG IC MCU FLASH 8KX14 44TQFP
PIC16F1937-I/MV MCU 14KB FLASH 512B RAM 40-UQFN
相关代理商/技术参数
参数描述
PIC18F44K20T-I/ML 功能描述:8位微控制器 -MCU 16KB Flash 768B RAM 36 I/O 8B RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F44K20T-I/MV 功能描述:8位微控制器 -MCU 16KB FL 768b-RAM 8b Familynanowatt XLP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F44K20T-I/PT 功能描述:8位微控制器 -MCU 16KB Flash 768B RAM 36 I/O 8B RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F44K22-E/ML 功能描述:8位微控制器 -MCU 16KB Flash 768B RAM 8b FamilynanoWat XLP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F44K22-E/MV 功能描述:8位微控制器 -MCU 16KB FL 768b RAM8bit familynanoWatt XLP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT