- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄3859 > AT89C2051-24PI (Atmel)IC MICRO CTRL 24MHZ 20DIP PDF資料下載
參數(shù)資料
| 型號(hào)： | AT89C2051-24PI |
| 廠商： | Atmel |
| 文件頁數(shù)： | 18/19頁 |
| 文件大小： | 0K |
| 描述： | IC MICRO CTRL 24MHZ 20DIP |
| 標(biāo)準(zhǔn)包裝： | 18 |
| 系列： | 89C |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 24MHz |
| 連通性： | UART/USART |
| 外圍設(shè)備： | LED |
| 輸入/輸出數(shù)： | 15 |
| 程序存儲(chǔ)器容量： | 2KB（2K x 8） |
| 程序存儲(chǔ)器類型： | 閃存 |
| RAM 容量： | 128 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4 V ~ 6 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 20-DIP（0.300"，7.62mm） |
| 包裝： | 管件 |
8
0368H–MICRO–6/08
AT89C2051
To Program and Verify the Array:
4.
Apply data for Code byte at location 000H to P1.0 to P1.7.
5.
Raise RST to 12V to enable programming.
6.
Pulse P3.2 once to program a byte in the PEROM array or the lock bits. The byte-write
cycle is self-timed and typically takes 1.2 ms.
7.
To verify the programmed data, lower RST from 12V to logic “H” level and set pins P3.3
to P3.7 to the appropriate levels. Output data can be read at the port P1 pins.
8.
To program a byte at the next address location, pulse XTAL1 pin once to advance the
internal address counter. Apply new data to the port P1 pins.
9.
Repeat steps 6 through 8, changing data and advancing the address counter for the
entire 2K bytes array or until the end of the object file is reached.
10. Power-off sequence:
set XTAL1 to “L”
set RST to “L”
Turn V
CC power off
Data Polling: The AT89C2051 features Data Polling to indicate the end of a write cycle. During
a write cycle, an attempted read of the last byte written will result in the complement of the writ-
ten data on P1.7. Once the write cycle has been completed, true data is valid on all outputs, and
the next cycle may begin. Data Polling may begin any time after a write cycle has been initiated.
Ready/Busy: The Progress of byte programming can also be monitored by the RDY/BSY output
signal. Pin P3.1 is pulled low after P3.2 goes High during programming to indicate BUSY. P3.1 is
pulled High again when programming is done to indicate READY.
Program Verify: If lock bits LB1 and LB2 have not been programmed code data can be read
back via the data lines for verification:
1.
Reset the internal address counter to 000H by bringing RST from “L” to “H”.
2.
Apply the appropriate control signals for Read Code data and read the output data at
the port P1 pins.
3.
Pulse pin XTAL1 once to advance the internal address counter.
4.
Read the next code data byte at the port P1 pins.
5.
Repeat steps 3 and 4 until the entire array is read.
The lock bits cannot be verified directly. Verification of the lock bits is achieved by observing that
their features are enabled.
Chip Erase: The entire PEROM array (2K bytes) and the two Lock Bits are erased electrically
by using the proper combination of control signals and by holding P3.2 low for 10 ms. The code
array is written with all “1”s in the Chip Erase operation and must be executed before any non-
blank memory byte can be re-programmed.
Reading the Signature Bytes: The signature bytes are read by the same procedure as a nor-
mal verification of locations 000H, 001H, and 002H, except that P3.5 and P3.7 must be pulled to
a logic low. The values returned are as follows.
(000H) = 1EH indicates manufactured by Atmel
(001H) = 21H indicates 89C2051
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT89C2051-24PC | IC MICRO CTRL 24MHZ 20DIP |
| AT87F51-24PC | IC MICRO CTRL 24MHZ 40DIP |
| AT87F51-24JI | IC MICRO CTRL 24MHZ 44PLCC |
| AT87F51-24JC | IC MICRO CTRL 24MHZ 44PLCC |
| AT87F51-24AI | IC MICRO CTRL 24MHZ 44TQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT89C2051-24PU | 功能描述:8位微控制器 -MCU 2kB Flash 128B RAM 24MHz 2.7V-6.0V 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 |
| AT89C2051-24PU SL383 | 制造商:Atmel Corporation 功能描述:8051 MCU, 20 PINS, UART, 2K FL |
| AT89C2051-24SC | 功能描述:8位微控制器 -MCU 20 PINS UART 2K - FLASH - 24MHZ 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 |
| AT89C2051-24SC SL383 | 制造商:Atmel Corporation 功能描述:MCU 8-bit AT89 80C51 CISC 2KB Flash 5V 20-Pin SOIC T/R |
| AT89C2051-24SI | 功能描述:8位微控制器 -MCU 20 PINS UART 2K FLASH - 24MHZ 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。