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参数资料
| 型号： | AT89C51RC |
| 厂商： | Atmel Corp. |
| 英文描述： | 8-bit Microcontroller with 32K Bytes Flash(带32k字节闪速存储器、8位微控制器) |
| 中文描述： | 8位32K字节闪存（带32K的字节闪速存储器，微控制器8位微控制器） |
| 文件页数： | 9/29页 |
| 文件大小： | 340K |
| 代理商： | AT89C51RC |
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9
AT45DB011B
1984B
–
09/01
Operation Mode
Summary
The modes described can be separated into two groups
–
modes which make use of the Flash
memory array (Group A) and modes which do not make use of the Flash memory array
(Group B).
Group A modes consist of:
1.
Main Memory Page Read
2.
Main Memory Page to Buffer Transfer
3.
Main Memory Page to Buffer Compare
4.
Buffer to Main Memory Page Program with Built-in Erase
5.
Buffer to Main Memory Page Program without Built-in Erase
6.
Page Erase
7.
Block Erase
8.
Main Memory Page Program through Buffer
9.
Auto Page Rewrite
Group B modes consist of:
1.
Buffer Read
2.
Buffer Write
3.
Status Register Read
If a Group A mode is in progress (not fully completed), then another mode in Group A should
not be started. However, during this time in which a Group A mode is in progress, modes in
Group B can be started.
This gives the Serial DataFlash the ability to virtually accommodate a continuous data stream.
While data is being programmed into main memory from buffer 1, data can be loaded into
buffer 2 (or vice versa). See application note AN-4 (
“
Using Atmel
’
s Serial DataFlash
”
) for more
details.
Pin Descriptions
SERIAL INPUT (SI):
The SI pin is an input-only pin and is used to shift data into the device.
The SI pin is used for all data input, including opcodes and address sequences.
SERIAL OUTPUT (SO):
The SO pin is an output-only pin and is used to shift data out from the
device.
SERIAL CLOCK (SCK):
The SCK pin is an input-only pin and is used to control the flow of
data to and from the DataFlash. Data is always clocked into the device on the rising edge of
SCK and clocked out of the device on the falling edge of SCK.
CHIP SELECT (CS):
The DataFlash is selected when the CS pin is low. When the device is
not selected, data will not be accepted on the SI pin, and the SO pin will remain in a high-
impedance state. A high-to-low transition on the CS pin is required to start an operation, and a
low-to-high transition on the CS pin is required to end an operation.
WRITE PROTECT:
If the WP pin is held low, the first 256 pages of the main memory cannot
be reprogrammed. The only way to reprogram the first 256 pages is to first drive the protect
pin high and then use the program commands previously mentioned. The WP pin is internally
pulled high; therefore, connection of the WP pin is not necessary if this pin and feature will not
be utilized. However, it is recommended that the WP pin be driven high externally whenever
possible.
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相关代理商/技术参数 |
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|---|---|
| AT89C51RC_05 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 32K Bytes Flash |
| AT89C51RC_08 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 32K Bytes Flash |
| AT89C51RC2 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 16K/ 32K Bytes Flash |
| AT89C51RC2_0312 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Microcontroller with 16K/32K Bytes Flash |
| AT89C51RC2-3CSCM | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 16K/ 32K Bytes Flash |
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