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参数资料
| 型号： | EP7312-IR-90 |
| 厂商： | CIRRUS LOGIC INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | HIGH-PERFORMANCE, LOW-POWER SYSTEM ON CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE |
| 中文描述： | 32-BIT, FLASH, 90 MHz, RISC MICROCONTROLLER, PBGA204 |
| 封装： | 13 X 13 MM, TFBGA-204 |
| 文件页数： | 10/64页 |
| 文件大小： | 1710K |
| 代理商： | EP7312-IR-90 |
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10
Copyright Cirrus Logic, Inc. 2003
(All Rights Reserved)
DS508PP5
EP7312
High-Performance, Low-Power System on Chip
DC-to-DC Converter Interface (PWM)
Provides two 96 kHz clock outputs with
programmable duty ratio (from 1-in-16 to 15-in-16)
that can be used to drivea positiveor negative DC to
DC converter
Table 14
shows the DC-to-DC Converter Interface pin
assignments.
Timers
Internal (RTC) timer
Two internal 16-bit programmable hardware count-
down timers
General Purpose Input/Output (GPIO)
Table 15
shows theGPIO pin assignments.
Three 8-bit and one 3-bit GPIO ports
Supports scanning keyboard matrix
Note:
Pins are multiplexed. See
Table 19 on page 11
for
more information.
Hardware Debug Interface
Full JTAG boundary scan and Embedded ICE
support
Table 16
shows the Hardware Debug Interface pin
assignments.
LED Flasher
A dedicated LED flasher module can be used to generate
a low frequency signal on Port D pin 0 for the purposeof
blinking an LED without CPU intervention. The LED
flasher feature is ideal as a visual annunciator in battery
powered applications, such as a voice mail indicator on a
portable phone or an appointment reminder on a PDA.
Table 17
shows theLED Flasher pin assignments.
Softwareadjustableflash period and duty cycle
Operates from 32 kHz RTC clock
Will continue to flash in IDLE and STANDBY states
4 mA drive current
Note:
Pins are multiplexed. See
Table 19 on page 11
for
more information.
Internal Boot ROM
The internal 128-byte Boot ROM facilitates download of
saved code to the on-board SRAM/ FLASH.
Packaging
The EP7312 is available in a 208-pin LQFP package, 256-
ball PBGA package, or a 204-ball TFBGA package.
Table 14. DC-to-DC Converter Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
DRIVE[1:0]
I/O
PWM drive output
FB[1:0]
I
PWM feedback input
Table 15. General Purpose Input/Output Pin Assignments
Pin Mnemonic
I/O
Pin Description
PA[7:0]
I/O
GPIO port A
PB[7:0]
I/O
GPIO port B
PD[0]/LEDFLSH
(Note)
I/O
GPIO port D
PD[5:1]
I/O
GPIO port D
PD[7:6]/SDQM[1:0]
(Note)
I/O
GPIO port D
PE[1:0]/BOOTSEL[1:0] (Note)
I/O
GPIO port E
PE[2]/CLKSEL
(Note)
I/O
GPIO port E
Table 16. Hardware Debug Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
TCLK
I
JTAG clock
TDI
I
JTAG data input
TDO
O
JTAG data output
nTRST
I
JTAG async reset input
TMS
I
JTAG mode select
Table 17. LED Flasher Pin Assignments
Pin Mnemonic
I/O
Pin Description
PD[0]/LEDFLSH
(Note)
O
LED flasher driver
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EP7312IR-90 | 制造商:Cirrus Logic 功能描述: |
| EP7312-IR-C | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE |
| EP7312-IV | 功能描述:IC ARM720T MCU 74MHZ 208-LQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:EP7 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C，LIN，SPI，UART/USART，USI 外围设备:欠压检测/复位，POR，PWM，温度传感器，WDT 输入/输出数:16 程序存储器容量:8KB（4K x 16） 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:带卷 (TR) |
| EP7312-IV-90 | 功能描述:IC ARM720T MCU 90MHZ 208-LQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:EP7 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C，LIN，SPI，UART/USART，USI 外围设备:欠压检测/复位，POR，PWM，温度传感器，WDT 输入/输出数:16 程序存储器容量:8KB（4K x 16） 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:带卷 (TR) |
| EP7312-IV-C | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE |
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