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參數(shù)資料
| 型號： | DEMO908AP64 |
| 英文描述： | DEMO908AP64 Demonstration Module User＇s Guide |
| 中文描述： | DEMO908AP64示范模塊用戶指南 |
| 文件頁數(shù)： | 11/19頁 |
| 文件大?。?/td> | 167K |
| 代理商： | DEMO908AP64 |
D E M O 9 0 8 R G 6 0
A U G U S T 6 , 2 0 0 4
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Power Switch
A Power Switch (PWR_SW) has been provided between the input Terminal Block and the volt-
age regulator to allow the user to turn the board on and off. The Power Switch connects or
disconnects only power applied to the terminal block. Voltage applied to connector J1 is not
affected by this switch.
Reset Switch
The RESET switch provides a method to apply an asynchronous reset to the module. Press-
ing the RESET switch applies a low voltage level to the RST* input. A resistor tied to the high
voltage rail prevents spurious RESET input to the MCU. A capacitor tied to ground holds the
signal line low for a sufficient amount of time.
Timing
An 8 MHz ceramic resonator at Y1 provides timing to the DEMO908GZ60. This allows a de-
fault 4.0 MHz internal operating frequency. Using the embedded PLL, the internal bus fre-
quency can be increased to a maximum of 8 MHz. The resonator output is routed to the MCU
only and is not available at connector (J1).
Connec tors J 1 and J 2
Connectors J1 and J2 are 40-pin, surface-mount, socket headers mounted on the bottom of
the module. Each connector is mounted over plated-through holes in the PCB. The socket is
a pass-through type socket designed to allow header insertion from either the top or bottom.
These connectors provide maximum flexibility allowing the module to connect directly to an ex-
panded development environment or to test equipment. Access to all MCU signals is available
at connector J1 or J2.
Power may be supplied to the module through pins J1-1 (+V) and J1-3 (GND). Use of this op-
tion requires input voltage between +4.75VDC and +5.25VDC. This input directly connects to
the module power and ground planes. Care should be exercised not to over-drive this input.
J1 can also be used to source power from the on-board regulator to external modules. The
PWR_SEL option header determines how power is routed to and from the module.
NOTE:
Power output from the module is limited by the 250 mA maximum output of the on-board
voltage regulator.
The table below shows the pin-out for the MCU IO Connectors.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DEMO908AP64QSG | DEMO908AP64 Quick Start Guide |
| DEMO908GZ60QSG | Quick Start Guide for DEMO908GZ60 |
| DEMO9S08RG60UM | DEMO9S08RG60 Demonstration Board Users Manual |
| DEMO9S12NE64QSG | DEMO9S12NE64 Demo Quick Start Guide |
| DEMO9S12NE64UM | DEMO9S12NE64 User＇s Manual |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DEMO908AP64E | 功能描述:開發(fā)板和工具包 - S08 / S12 MC68HC908AP64 Demo Board RoHS:否 產(chǎn)品:Development Kits 工具用于評估:MC9S12G128 核心:S12 接口類型:CAN, LIN, RS-232, USB 工作電源電壓:5 V 制造商:Freescale Semiconductor |
| DEMO908AP64QSG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DEMO908AP64 Quick Start Guide |
| DEMO908GZ60 | 功能描述:開發(fā)板和工具包 - S08 / S12 908GZ60 DEMO BOARD RoHS:否 產(chǎn)品:Development Kits 工具用于評估:MC9S12G128 核心:S12 接口類型:CAN, LIN, RS-232, USB 工作電源電壓:5 V 制造商:Freescale Semiconductor |
| DEMO908GZ60E | 功能描述:開發(fā)板和工具包 - S08 / S12 908GZ60 DEMO BOARD RoHS:否 產(chǎn)品:Development Kits 工具用于評估:MC9S12G128 核心:S12 接口類型:CAN, LIN, RS-232, USB 工作電源電壓:5 V 制造商:Freescale Semiconductor |
| DEMO908GZ60QSG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Quick Start Guide for DEMO908GZ60 |
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