参数资料
型号: PIC18F43K20-E/ML
厂商: Microchip Technology
文件页数: 13/42页
文件大小: 0K
描述: IC PIC MCU FLASH 4KX16 44QFN
标准包装: 45
系列: PIC® XLP™ 18F
核心处理器: PIC
芯体尺寸: 8-位
速度: 48MHz
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: 8KB(4K x 16)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 512 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 ~ 125°C
封装/外壳: 44-VQFN 裸露焊盘
包装: 管件
PIC18F2XK20/4XK20
DS41297F-page 20
Advance Information
2009 Microchip Technology Inc.
3.3
Data EEPROM Programming
Data EEPROM is accessed one byte at a time via an
Address Pointer (register pair EEADRH:EEADR) and a
data latch (EEDATA). Data EEPROM is written by
loading EEADRH:EEADR with the desired memory
location, EEDATA with the data to be written and initiat-
ing a memory write by appropriately configuring the
EECON1 register. A byte write automatically erases the
location and writes the new data (erase-before-write).
When using the EECON1 register to perform a data
EEPROM write, both the EEPGD and CFGS bits must
be cleared (EECON1<7:6> = 00). The WREN bit must
be set (EECON1<2> = 1) to enable writes of any sort
and this must be done prior to initiating a write
sequence. The write sequence is initiated by setting the
WR bit (EECON1<1> = 1).
The write begins on the falling edge of the 24th PGC
after the WR bit is set. It ends when the WR bit is
cleared by hardware.
After the programming sequence terminates, PGC
must be held low for the time specified by parameter
P10 to allow high-voltage discharge of the memory
array.
FIGURE 3-6:
PROGRAM DATA FLOW
FIGURE 3-7:
DATA EEPROM WRITE TIMING DIAGRAM
Start
Start Write
Set Data
Done
No
Yes
done?
Enable Write
Sequence
Set Address
WR bit
clear?
No
Yes
n
PGC
PGD
PGD = Input
00
0
BSF EECON1, WR
4-bit Command
12
3
4
1
215 16
P5
P5A
P10
12
n
Poll WR bit, Repeat until Clear
16-bit Data
Payload
12
3
4
1
215 16
12
3
P5
P5A
4
1
2
15 16
P5
P5A
00
0
MOVF EECON1, W, 0
4-bit Command
00
4-bit Command
Shift Out Data
MOVWF TABLAT
PGC
PGD
(see below)
(see Figure 4-4)
PGD = Input
PGD = Output
Poll WR bit
P11A
P5A
2 NOP commands
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PIC18F43K20-I/ML 功能描述:8位微控制器 -MCU 8 KB Enh Flash 768 RAM 36 I/O Pb Free 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
PIC18F43K20-I/MV 功能描述:8位微控制器 -MCU 8KB FL 768b RAM 8bit 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
PIC18F43K20-I/P 功能描述:8位微控制器 -MCU 8 KB Enh Flash 768 RAM 36 I/O Pb Free 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
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PIC18F43K20T-I/ML 功能描述:8位微控制器 -MCU 8 KB Enh Flash 768 RAM 36 I/O Pb Free 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