参数资料
| 型号： | EP7309-CV |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 42/42页 |
| 文件大小： | 0K |
| 描述： | IC ARM720T MCU 74MHZ 208-LQFP |
| 标准包装： | 36 |
| 系列： | EP7 |
| 核心处理器： | ARM7 |
| 芯体尺寸： | 32-位 |
| 速度： | 74MHz |
| 连通性： | 编解码器，DAI，EBI/EMI，IrDA，键盘，SPI/Microwire1，UART/USART |
| 外围设备： | LCD，LED，MaverickKey，POR，PWM |
| 输入/输出数： | 27 |
| 程序存储器类型： | ROMless |
| RAM 容量： | 56K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.3 V ~ 2.7 V |
| 振荡器型： | 外部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 208-LQFP |
| 包装： | 托盘 |
| 其它名称： | 598-1213 |
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DS507F2
Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved)
9
EP7309
High-Performance, Low-Power System on Chip
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
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
drive a positive or negative DC to DC converter
Timers
Internal (RTC) timer
Two internal 16-bit programmable hardware count-down
timers
General Purpose Input/Output (GPIO)
Three 8-bit and one 3-bit GPIO ports
Supports scanning keyboard matrix
Note:
Pins are multiplexed. See Table 18 on page 10 for
more information.
Hardware debug Interface
Full JTAG boundary scan and Embedded ICE support
LED Flasher
A dedicated LED flasher module can be used to generate a low
frequency signal on Port D pin 0 for the purpose of 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.
Software adjustable flash 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 18 on page 10 for
more information.
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 11. 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 12. PLL and Clocking Pin Assignments
Pin Mnemonic
I/O
Pin Description
DRIVE[1:0]
I/O
PWM drive output
FB[1:0]
I
PWM feedback input
Table 13. DC-to-DC Converter Interface 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 14. General Purpose Input/Output 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 15. Hardware Debug Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
PD[0]/LEDFLSH
(Note)
O
LED flasher driver
Table 16. LED Flasher Pin Assignments
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EP7309-CV-C | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| EP7309-CVZ | 功能描述:音频片上系统 - SoC IC Ultra Low Power Audio Decode SOC RoHS:否 制造商:Cirrus Logic |
| EP7309-EB-C | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| EP7309-ER-C | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| EP7309-EV-C | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
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