- 您现在的位置：买卖IC网 > PDF目录11356 > PIC16F74T-I/L (Microchip Technology)IC MCU FLASH 4KX14 A/D 44PLCC PDF资料下载
参数资料
| 型号： | PIC16F74T-I/L |
| 厂商： | Microchip Technology |
| 文件页数： | 39/104页 |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH 4KX14 A/D 44PLCC |
| 产品培训模块： | Asynchronous Stimulus |
| 标准包装： | 500 |
| 系列： | PIC® 16F |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 连通性： | I²C，SPI，UART/USART |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 33 |
| 程序存储器容量： | 7KB（4K x 14） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 192 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4 V ~ 5.5 V |
| 数据转换器： | A/D 8x8b |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LCC（J 形引线） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页当前第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页
2002 Microchip Technology Inc.
DS30325B-page 29
PIC16F7X
3.0
READING PROGRAM MEMORY
The FLASH Program Memory is readable during nor-
mal operation over the entire VDD range. It is indirectly
addressed through Special Function Registers (SFR).
Up to 14-bit numbers can be stored in memory for use
as calibration parameters, serial numbers, packed 7-bit
ASCII, etc. Executing a program memory location con-
taining data that forms an invalid instruction results in a
NOP
.
There are five SFRs used to read the program and
memory. These registers are:
PMCON1
PMDATA
PMDATH
PMADR
PMADRH
The program memory allows word reads. Program
memory access allows for checksum calculation and
reading calibration tables.
When interfacing to the program memory block, the
PMDATH:PMDATA registers form a two-byte word,
which
holds
the
14-bit
data
for
reads.
The
PMADRH:PMADR registers form a two-byte word,
which holds the 13-bit address of the FLASH location
being accessed. These devices can have up to 8K
words of program FLASH, with an address range from
0h to 3FFFh. The unused upper bits in both the
PMDATH and PMADRH registers are not implemented
and read as “0’s”.
3.1
PMADR
The address registers can address up to a maximum of
8K words of program FLASH.
When selecting a program address value, the MSByte
of the address is written to the PMADRH register and
the LSByte is written to the PMADR register. The upper
MSbits of PMADRH must always be clear.
3.2
PMCON1 Register
PMCON1 is the control register for memory accesses.
The control bit RD initiates read operations. This bit
cannot be cleared, only set, in software. It is cleared in
hardware at the completion of the read operation.
REGISTER 3-1:
PMCON1 REGISTER (ADDRESS 18Ch)
R-1
U-0
U-x
U-0
R/S-0
reserved
—
RD
bit 7
bit 0
bit 7
Reserved: Read as ‘1’
bit 6-1
Unimplemented: Read as '0'
bit 0
RD: Read Control bit
1
= Initiates a FLASH read, RD is cleared in hardware. The RD bit can only be set (not cleared)
in software.
0
= FLASH read completed
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR reset
’1’ = Bit is set
’0’ = Bit is cleared
x = Bit is unknown
相关PDF资料 |
PDF描述 |
|---|---|
| VE-JW4-IX-F3 | CONVERTER MOD DC/DC 48V 75W |
| DSPIC33FJ64MC506A-E/PT | IC DSPIC MCU/DSP 64K 64-TQFP |
| VE-JW4-IX-F1 | CONVERTER MOD DC/DC 48V 75W |
| VE-BWK-IY-S | CONVERTER MOD DC/DC 40V 50W |
| VE-BWJ-IY-S | CONVERTER MOD DC/DC 36V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC16F753-E/ML | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 16QFN 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-E/P | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 14PDIP 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-E/SL | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 14SOIC 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-E/ST | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 14TSSOP 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-I/ML | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 16QFN 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
发布紧急采购，3分钟左右您将得到回复。