參數(shù)資料
型號(hào): ATWEBDVK-02RC
廠商: Atmel
文件頁數(shù): 5/137頁
文件大?。?/td> 0K
描述: KIT DEV TCP/IP AT89C51RD2 REMOTE
標(biāo)準(zhǔn)包裝: 1
系列: @Web
主要目的: *
嵌入式: *
已用 IC / 零件: AT89C51RD2
主要屬性: *
次要屬性: *
已供物品: 板,帶遠(yuǎn)程控制器模塊和軟件
產(chǎn)品目錄頁面: 617 (CN2011-ZH PDF)
102
4235K–8051–05/08
AT89C51RD2/ED2
24.7
ISP Protocol Description
24.7.1
Physical Layer
The UART used to transmit information has the following configuration:
Character: 8-bit data
Parity: none
Stop: 2 bits
Flow control: none
Baudrate: autobaud is performed by the bootloader to compute the baudrate chosen by the
host.
24.7.2
Frame Description
The Serial Protocol is based on the Intel Hex-type records.
Intel Hex records consist of ASCII characters used to represent hexadecimal values and are
summarized below.
Figure 24-6. Intel Hex Type Frame
Record Mark:
Record Mark is the start of frame. This field must contain ’:’.
Reclen:
Reclen specifies the number of bytes of information or data which follows the Record Type field
of the record.
Load Offset:
Load Offset specifies the 16-bit starting load offset of the data bytes, therefore this field is used
only for Data Program Record (see Section “ISP Commands Summary”).
Record Type:
Record Type specifies the command type. This field is used to interpret the remaining informa-
tion within the frame. The encoding for all the current record types is described in Section “ISP
Data/Info:
Data/Info is a variable length field. It consists of zero or more bytes encoded as pairs of hexa-
decimal digits. The meaning of data depends on the Record Type.
Checksum:
The two’s complement of the 8-bit bytes that result from converting each pair of ASCII hexadec-
imal digits to one byte of binary, and including the Reclen field to and including the last byte of
the Data/Info field. Therefore, the sum of all the ASCII pairs in a record after converting to
binary, from the Reclen field to and including the Checksum field, is zero.
Record
Load
Data
Mark
’:’
Reclen
Offset
Type
or
Info
Checksum
1-byte
2-bytes
1-byte
n-bytes
1-byte
相關(guān)PDF資料
PDF描述
KSZ8862-10FL-EVAL BOARD EVALUATION KSZ8862-10FL
ITCSN-0800-25-U HEATSHRINK ITCSN 4/5" X 25'
ECM15DCTT-S288 CONN EDGECARD 30POS .156 EXTEND
V24B12E150B3 CONVERTER MOD DC/DC 12V 150W
ECM24DCTN-S288 CONN EDGECARD 48POS .156 EXTEND
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ATWEBDVK-02VOIP 功能描述:KIT DEV TCP/IP AT89C51RD2 VOIP RoHS:否 類別:編程器,開發(fā)系統(tǒng) >> 評(píng)估演示板和套件 系列:@Web 標(biāo)準(zhǔn)包裝:1 系列:PSoC® 主要目的:電源管理,熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板,CD,電源
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