参数资料
| 型号： | T89C5115-TDSIM |
| 厂商： | Atmel |
| 文件页数： | 36/113页 |
| 文件大小： | 0K |
| 描述： | IC 8051 MCU FLASH 16K 24SOIC |
| 标准包装： | 31 |
| 系列： | 89C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 40MHz |
| 连通性： | UART/USART |
| 外围设备： | POR，PWM，WDT |
| 输入/输出数： | 20 |
| 程序存储器容量： | 16KB（16K x 8） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 2K x 8 |
| RAM 容量： | 512 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 3 V ~ 5.5 V |
| 数据转换器： | A/D 8x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 包装： | 管件 |
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29
AT89C5115
4128G–8051–02/08
EEPROM Data
Memory
The 2K bytes on-chip EEPROM memory block is located at addresses 0000h to 07FFh
of the XRAM/XRAM memory space and is selected by setting control bits in the EECON
register. A read in the EEPROM memory is done with a MOVX instruction.
A physical write in the EEPROM memory is done in two steps: write data in the column
latches and transfer of all data latches into an EEPROM memory row (programming).
The number of data written on the page may vary from 1 up to 128 Bytes (the page
size). When programming, only the data written in the column latch is programmed and
a ninth bit is used to obtain this feature. This provides the capability to program the
whole memory by Bytes, by page or by a number of Bytes in a page. Indeed, each ninth
bit is set when the writing the corresponding byte in a row and all these ninth bits are
reset after the writing of the complete EEPROM row.
Write Data in the Column
Latches
Data is written by byte to the column latches as for an external RAM memory. Out of the
11 address bits of the data pointer, the 4 MSBs are used for page selection (row) and 7
are used for byte selection. Between two EEPROM programming sessions, all the
addresses in the column latches must stay on the same page, meaning that the 4 MSB
must no be changed.
The following procedure is used to write to the column latches:
Save and disable interrupt
Set bit EEE of EECON register
Load DPTR with the address to write
Store A register with the data to be written
Execute a MOVX @DPTR, A
If needed loop the three last instructions until the end of a 128 Bytes page
Restore interrupt
Note:
The last page address used when loading the column latch is the one used to select the
page programming address.
Programming
The EEPROM programming consists of the following actions:
Write one or more Bytes of one page in the column latches. Normally, all Bytes must
belong to the same page; if not, the last page address will be latched and the others
discarded.
Launch programming by writing the control sequence (50h followed by A0h) to the
EECON register.
EEBUSY flag in EECON is then set by hardware to indicate that programming is in
progress and that the EEPROM segment is not available for reading.
The end of programming is indicated by a hardware clear of the EEBUSY flag.
Note:
The sequence 5xh and Axh must be executed without instructions between then other-
wise the programming is aborted.
Read Data
The following procedure is used to read the data stored in the EEPROM memory:
Save and disable interrupt
Set bit EEE of EECON register
Load DPTR with the address to read
Execute a MOVX A, @DPTR
Restore interrupt
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相关代理商/技术参数 |
参数描述 |
|---|---|
| T89C5115-TISIM | 功能描述:IC 8051 MCU FLASH 16K 28SOIC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:89C 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR，WDT 输入/输出数:32 程序存储器容量:32KB（32K x 8） 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP（0.600"，15.24mm） 包装:管件 |
| T89C5115-TISUM | 功能描述:IC 8051 MCU FLASH 16K 28SOIC RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:89C 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C，LIN，SPI，UART/USART，USI 外围设备:欠压检测/复位，POR，PWM，温度传感器，WDT 输入/输出数:16 程序存储器容量:8KB（4K x 16） 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:带卷 (TR) |
| T89C5121 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with MULTI-PROTOCOL SMART CARD INTERFACE |
| T89C5121-ICRIL | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with MULTI-PROTOCOL SMART CARD INTERFACE |
| T89C5121-ICSIL | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with Multi protocol SMART Card Interface |
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