參數(shù)資料
型號(hào)： EP7309-IV-C
廠商： CIRRUS LOGIC INC
元件分類： 微控制器/微處理器
英文描述： HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE
中文描述： 32-BIT, FLASH, 74 MHz, RISC MICROCONTROLLER, PQFP208
封裝： LQFP-208
文件頁(yè)數(shù)： 6/46頁(yè)
文件大?。?/td> 1893K
代理商： EP7309-IV-C
6
Copyright 2001 Cirrus Logic (All Rights Reserved)
DS507PP1
EP7309
High-Performance, Low-Power System on Chip
Driven byan 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
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 R on page 7
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 R on page 7
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 K. 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 L. 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 M. DC-to-DC Converter Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
PA[7:0]
I
GPIO port A
PB[7:0]
I
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
GPIO port E
PE[2]/CLKSEL
(Note)
I
GPIO port E
Table N. 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 O. Hardware Debug Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
PD[0]/LEDFLSH
(Note)
O
LED flasher driver
Table P. LED Flasher Pin Assignments
相關(guān)PDF資料
PDF描述
EP7311-CB-C HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE
EP7311-CR-C HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE
EP7311 HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE
EP7311-CV-C HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE
EP7311-EB-C HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE
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