- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄11722 > AT89C51RC-24AU (Atmel)MCU 8051 32K FLASH 5.5V 44-VQFP PDF資料下載
參數(shù)資料
| 型號： | AT89C51RC-24AU |
| 廠商： | Atmel |
| 文件頁數(shù)： | 3/36頁 |
| 文件大?。?/td> | 0K |
| 描述： | MCU 8051 32K FLASH 5.5V 44-VQFP |
| 產(chǎn)品培訓(xùn)模塊： | MCU Product Line Introduction |
| 標(biāo)準(zhǔn)包裝： | 160 |
| 系列： | 89C |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 24MHz |
| 連通性： | SPI，UART/USART |
| 外圍設(shè)備： | WDT |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲器容量： | 32KB（32K x 8） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 512 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4 V ~ 5.5 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 44-TQFP |
| 包裝： | 托盤 |
| 配用： | AT89STK-11-ND - KIT STARTER FOR AT89C51RX2 |
第1頁第2頁當(dāng)前第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁
11
1920D–MICRO–6/08
AT89C51RC
With EXTRAM = 0, the ERAM is indirectly addressed, using the MOVX instruction in combina-
tion with any of the registers R0, R1 of the selected bank or DPTR. An access to ERAM will not
affect ports P0, P2, P3.6 (WR), and P3.7 (RD). For example, with EXTRAM = 0,
MOVX@R0, # data
where R0 contains 0A0H, accesses the ERAM at address 0A0H rather than external memory.
An access to external data memory locations higher than FFH (i.e. 0100H to FFFFH) will be per-
formed with the MOVX DPTR instructions in the same way as in the standard 80C51, i.e., with
P0 and P2 as data/address bus, and P3.6 and P3.7 as write and read timing signals (see Figure
7-1).
Figure 7-1.
Internal and External Data Memory Address (with EXTRAM = 0)
With EXTRAM = 1, MOVX @ Ri and MOVX@DPTR will be similar to the standard 80C51.
MOVX@Ri will provide an 8-bit address multiplexed with data on Port 0 and any output port pins
can be used to output higher-order address bits. This is to provide the external paging capability.
MOVX@DPTR will generate a 16-bit address. Port 2 outputs the high-order 8 address bits (the
contents of DP0H), while Port 0 multiplexes the low-order 8 address bits (the contents of DP0L)
with data. MOVX@Ri and MOVX@DPTR will generate either read or write signals on P3.6 (WR)
and P3.7 (RD).
The stack pointer (SP) may be located anywhere in the 256 bytes RAM (lower and upper RAM)
internal data memory. The stack may not be located in the ERAM.
8.
Hardware Watchdog Timer (One-time Enabled with Reset-out)
The WDT is intended as a recovery method in situations where the CPU may be subjected to
software upsets. The WDT consists of a 13-bit counter and the WatchDog Timer Reset
(WDTRST) SFR. The WDT is defaulted to disable from exiting reset. To enable the WDT, a user
must write 01EH and 0E1H in sequence to the WDTRST register (SFR location 0A6H). When
the WDT is enabled, it will increment every machine cycle while the oscillator is running. The
WDT timeout period is dependent on the external clock frequency. There is no way to disable
the WDT except through reset (either hardware reset or WDT overflow reset). When WDT over-
flows, it will drive an output RESET HIGH pulse at the RST pin.
ERAM
256 BYTES
UPPER
128 BYTES
INTERNAL
RAM
LOWER
128 BYTES
INTERNAL
RAM
FF
00
FF
80
00
SPECIAL
FUNCTION
REGISTER
FF
80
EXTERNAL
DATA
MEMORY
FFFF
0100
0000
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ATTINY28V-1AU | IC MCU AVR 2K 1.2MHZ 1.8V 32TQFP |
| MB95F376EPMC2-G-SNE2 | IC MCU 8BIT 36KB FLASH 64LQFP |
| VE-BT4-IW-F4 | CONVERTER MOD DC/DC 48V 100W |
| D38999/24JD15HN | CONN RCPT 15POS JAM NUT W/PINS |
| VE-BT3-IX-F2 | CONVERTER MOD DC/DC 24V 75W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT89C51RC-24JC | 功能描述:8位微控制器 -MCU 32K FLASH 4.0 TO 5.5V - 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| AT89C51RC-24JI | 功能描述:8位微控制器 -MCU 32K FLASH 4.0 TO 5.5V - 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| AT89C51RC-24JJ | 功能描述:8位微控制器 -MCU Microcontroller 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| AT89C51RC-24JU | 功能描述:8位微控制器 -MCU 32K FLASH 4.0 TO 5.5V - 24MHZ 5V 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| AT89C51RC-24JU SL383 | 制造商:Atmel Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。