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參數(shù)資料
| 型號： | EP7311-CB |
| 廠商： | Cirrus Logic Inc |
| 文件頁數(shù)： | 42/42頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ARM720T MCU 74MHZ 256-PBGA |
| 標準包裝： | 90 |
| 系列： | EP7 |
| 核心處理器： | ARM7 |
| 芯體尺寸： | 32-位 |
| 速度： | 74MHz |
| 連通性： | 編解碼器，EBI/EMI，IrDA，鍵盤，多媒體編解碼器，SPI/Microwire1，UART/USART |
| 外圍設(shè)備： | LCD，LED，MaverickKey，PWM |
| 輸入/輸出數(shù)： | 27 |
| 程序存儲器類型： | ROMless |
| RAM 容量： | 56K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.3 V ~ 2.7 V |
| 振蕩器型： | 外部 |
| 工作溫度： | 0°C ~ 70°C |
| 封裝/外殼： | 256-BGA |
| 包裝： | 托盤 |
| 其它名稱： | 598-1220 |
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DS506F2
Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved)
9
EP7311
High-Performance, Low-Power System on Chip
64-Keypad Interface
Matrix keyboards and keypads can be easily read by the
EP7311. A dedicated 8-bit column driver output generates
strobes for each keyboard column signal. The pins of Port A,
when configured as inputs, can be selectively OR'ed together
to provide a keyboard interrupt that is capable of waking the
system from a STANDBY or IDLE state.
Column outputs can be individually set high with the
remaining bits left at high-impedance
Column outputs can be driven all-low, all-high, or all-high-
impedance
Keyboard interrupt driven by OR'ing together all Port A
bits
Keyboard interrupt can be used to wake up the system
8
8 keyboard matrix usable with no external logic, extra
keys can be added with minimal glue logic
Interrupt Controller
When unexpected events arise during the execution of a
program (i.e., interrupt or memory fault) an exception is
usually generated. When these exceptions occur at the same
time, a fixed priority system determines the order in which
they are handled. The EP7311 interrupt controller has two
interrupt types: interrupt request (IRQ) and fast interrupt
request (FIQ). The interrupt controller has the ability to control
interrupts from 22 different FIQ and IRQ sources.
Supports 22 interrupts from a variety of sources (such as
UARTs, SSI1, and key matrix.)
Routes interrupt sources to the ARM720T’s IRQ or FIQ
(Fast IRQ) inputs
Five dedicated off-chip interrupt lines operate as level
sensitive interrupts
.
Note:
Pins are multiplexed. See Table S on page 11 for more
information.
Real-Time Clock
The EP7311 contains a 32-bit Real Time Clock (RTC) that can
be written to and read from in the same manner as the timer
counters. It also contains a 32-bit output match register which
can be programmed to generate an interrupt.
Driven by an external 32.768 kHz crystal oscillator
PLL and Clocking
Processor and Peripheral Clocks operate from a single
3.6864 MHz crystal or external 13 MHz clock
Programmable clock speeds allow the peripheral bus to run
at 18 MHz when the processor is set to 18 MHz and at
36 MHz when the processor is set to 36, 49 or 74 MHz
Pin Mnemonic
I/O
Pin Description
COL[7:0]
O
Keyboard scanner column
drive
Table J. Keypad Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
nEINT[2:1]
I
External interrupt
EINT[3]
I
External interrupt
nEXTFIQ
I
External Fast Interrupt input
nMEDCHG/nBROM
(Note)
I
Media change interrupt input
Table K. Interrupt Controller Pin Assignments
Pin Mnemonic
Pin Description
RTCIN
Real-Time Clock Oscillator Input
RTCOUT
Real-Time Clock Oscillator Output
VDDRTC
Real-Time Clock Oscillator Power
VSSRTC
Real-Time Clock Oscillator Ground
Table L. Real-Time Clock Pin Assignments
Pin Mnemonic
Pin Description
MOSCIN
Main Oscillator Input
MOSCOUT
Main Oscillator Output
VDDOSC
Main Oscillator Power
VSSOSC
Main Oscillator Ground
Table M. PLL and Clocking Pin Assignments
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EP7311-CB-90 | 功能描述:IC ARM720T MCU 90MHZ 256-PBGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:EP7 標準包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設(shè)備:欠壓檢測/復位，POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| EP7311-CB-C | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE |
| EP7311-CR | 制造商:Cirrus Logic 功能描述:LOW-PWR PROCESSOR 208LQFP - Tape and Reel |
| EP7311-CR-90 | 功能描述:音頻片上系統(tǒng) - SoC Hi Perf. Low PWR SOC 90MHz RoHS:否 制造商:Cirrus Logic 處理器系列:ARM7 核心:ARM 數(shù)據(jù)總線寬度:32 bit 安裝風格: 封裝 / 箱體: |
| EP7311-CR-C | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE |
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