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| 型號(hào)： | SAK-XC2785X-72F80L |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQFP144 |
| 封裝： | 0.50 MM PITCH, GREEN, PLASTIC, LQFP-144 |
| 文件頁(yè)數(shù)： | 92/141頁(yè) |
| 文件大?。?/td> | 1793K |
| 代理商： | SAK-XC2785X-72F80L |
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XC2785X
XC2000 Family / Base Line
Functional Description
Data Sheet
54
V2.1, 2011-07
3.2
External Bus Controller
All external memory access operations are performed by a special on-chip External Bus
Controller (EBC). The EBC also controls access to resources connected to the on-chip
LXBus (MultiCAN and the USIC modules). The LXBus is an internal representation of
the external bus that allows access to integrated peripherals and modules in the same
way as to external components.
The EBC can be programmed either to Single Chip Mode, when no external memory is
required, or to an external bus mode with the following selections
1):
Address Bus Width with a range of 0 … 24-bit
Data Bus Width 8-bit or 16-bit
Bus Operation Multiplexed or Demultiplexed
The bus interface uses Port 10 and Port 2 for addresses and data. In the demultiplexed
bus modes, the lower addresses are output separately on Port 0 and Port 1. The number
of active segment address lines is selectable, restricting the external address space to
8 Mbytes … 64 Kbytes. This is required when interface lines shall be assigned to Port 2.
External CS signals (address windows plus default) can be generated and output on
Port 4 in order to save external glue logic. External modules can be directly connected
to the common address/data bus and their individual select lines.
A HOLD/HLDA protocol is available for bus arbitration; this allows the sharing of external
resources with other bus masters. The bus arbitration is enabled by software, after which
pins P3.0 … P3.2 (BREQ, HLDA, HOLD) are automatically controlled by the EBC. In
Master Mode (default after reset) the HLDA pin is an output. In Slave Mode pin HLDA is
switched to be an input. This allows the direct connection of the slave controller to
another master controller without glue logic.
Important timing characteristics of the external bus interface are programmable (with
registers TCONCSx/FCONCSx) to allow the user to adapt it to a wide range of different
types of memories and external peripherals.
Access to very slow memories or modules with varying access times is supported by a
special ‘Ready’ function. The active level of the control input signal is selectable.
In addition, up to four independent address windows may be defined (using registers
ADDRSELx) to control access to resources with different bus characteristics. These
address windows are arranged hierarchically where window 4 overrides window 3, and
window 2 overrides window 1. All accesses to locations not covered by these four
address windows are controlled by TCONCS0/FCONCS0. The currently active window
can generate a chip select signal.
The external bus timing is based on the rising edge of the reference clock output
CLKOUT. The external bus protocol is compatible with that of the standard C166 Family.
1) Bus modes are switched dynamically if several address windows with different mode settings are used.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| SAK-XC2785X-72F80L AA | 功能描述:IC MCU 32BIT FLASH 144-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:XC27x5X 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:260 系列:73S12xx 核心處理器:80515 芯體尺寸:8-位 速度:24MHz 連通性:I²C，智能卡，UART/USART，USB 外圍設(shè)備:LED，POR，WDT 輸入/輸出數(shù):9 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:2K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-VFQFN 裸露焊盤(pán) 包裝:管件 |
| SAK-XC2785X-72F80LAA | 功能描述:16位微控制器 - MCU 16 BIT FLASH C11 BCS RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| SAK-XC2786X-96F66L | 制造商:Infineon Technologies AG 功能描述: |
| SAK-XC2786X-96F66L AC | 功能描述:16位微控制器 - MCU 16 BIT FLASH C11 BCS RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| SAK-XC2786X-96F66LAC | 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述: |
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