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參數(shù)資料
| 型號： | DS80C411-FNY+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 80/102頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 75MHZ 16MB HP 100-LQFP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 系列： | 80C |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 75MHz |
| 連通性： | 1 線，CAN，EBI/EMI，以太網(wǎng)，SIO，UART/USART |
| 外圍設(shè)備： | 電源故障復(fù)位，WDT |
| 輸入/輸出數(shù)： | 64 |
| 程序存儲器容量： | 64KB（64K x 8） |
| 程序存儲器類型： | ROM |
| RAM 容量： | 64K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.62 V ~ 3.6 V |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 100-LQFP |
| 包裝： | 托盤 |
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DS80C410/DS80C411 Network Microcontrollers with Ethernet and CAN
79 of 102
Figure 17. Maxim tbin2 Record and File Format
Find-User Code
The DS80C410 ROM firmware attempts to find valid user code by searching for specific signature bytes. First, the
address C000h in the internal RAM is checked. If unsuccessful, the ROM starts a search at the beginning of each
64kB block of memory. The search begins at address location C00000h and continues downward through memory
in decrements of 64kB until executable code is located or failure occurs (search terminates at 000000h). For the
find-user-code routine to judge a block of memory as valid executable code, it must be tagged with the signature
bytes shown in Figure 18.
Figure 18. User Code Signature (Required by Find-User Code)
Once a valid signature is found, the signature byte at offset 6, referred to in Figure 18 as the segment address, is
examined to determine whether execution control should be transferred immediately or whether the search should
continue. If the segment address byte equals 00h or matches the most significant address byte for the 64kB block
being examined, execution is transferred to the user code. If the segment address byte does not match, that
segment address byte is used to determine the next memory block examined for a valid signature.
Exported ROM Functions
The DS80C410 ROM firmware implements many functions that are made accessible to the user application code.
In order for user application code to call a specific function, the location of that function must be known. The
absolute address location of each DS80C410 ROM function must be read from an export table (also found in the
ROM). To allow flexibility for future ROM firmware structural changes and improvements, the export table itself is
not connected to a specific address range, but instead a 3-Byte pointer to the start of the export table is fixed at
addresses FF0002h (XSB), FF0003h (MSB), and FF0004h (LSB). The first three bytes of the export table contain
the quantity of function entries in the export table. In 3-Byte increments, following the first three bytes, the rest of
the table contains absolute address locations for the exported ROM functions. Thus, once the export table location
has been discovered, the index for a given function/structure (Table 16) can be used to find its absolute address
(Function address = ExportTable[Index x 3]). Figure 19 illustrates the method for locating the export table and a
VERSION
TARGET ADDRESS (3)
LENGTH-1 (2)
CRC-16 (2)
BINARY DATA (LENGTH)
tbin2 record
.
tbin2 record
tbin2 file
FIELD
FORMAT (NOTES)
Version:
01h (versions other than 01h reserved for future use)
Target Address:
LSB, MSB, XSB (target addresses > FF0000h reserved)
Length-1:
LSB, MSB
CRC-16:
LSB, MSB
SJMP xx
‘TINI’
80h,xxh
54h,49h,4Eh,49h
Segment Address(1)
USER CODE
SIGNATURE BYTES
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| DS80C411-FNY+ | 功能描述:8位微控制器 -MCU Network MCU w/Ethernet & CAN 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 |
| DS80CH11 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:System Energy Manager |
| DS80CH11+E02 | 制造商:Maxim from Components Direct 功能描述:MAXIM DS80CH11+E02 SYSTEM ENERGY MANAGERS - Trays 制造商:Maxim 功能描述:Maxim DS80CH11+E02 System Energy Managers |
| DS80CH11-E02 | 制造商:Maxim from Components Direct 功能描述:MAXIM DS80CH11-E02 SYSTEM ENERGY MANAGERS - Trays 制造商:Maxim 功能描述:Maxim DS80CH11-E02 System Energy Managers |
| DS80E100 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:5 to 12.5 Gbps, Power-Saver Equalizer for Backplanes and Cables |
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