1.0 INTRODUCTION The H8/36912F Starter Kit Plus (SKP) is a compact system to evaluate MCU performance for the Renesas H8/300H µTINY family of micro controllers. The kit also includes sample code, documentation and tutorial to jumpstart development. It incorporates a programming system for the H8/36912F on-chip FLASH device. It contains a SOP-32 package H8/36912F microcomputer on the board.
USB port and Microsoft Windows 98, ME, 2000, or XP operating system. 3.2 SKP36912G Board The SKP36912G board provides a compact evaluation and development environment for the H8/36912F micro controller. It has four switches (pushbutton and DIP), LED’s for user interface and a 2-pin jumper for current measurement.
It also has a low drop out regulator, which regulates up to 12V DC input voltage and gives 5V output and is capable of supplying output currents up to 300mA, 24C02 EEPROM for RAM backup at low voltage detection and MAX232 for serial communication.
4.0 Hardware 4.1 SKP36912G Board Figure 5-1 shows the 36912G Board with major components identified. E7 Connector 20K POT MAX232 74HC00 JP1 for current Serial port measurement Female Connector CN2 pin 4, 6 Low Drop out Regulator H8/36912 Reset Switch SW3...
5.4 POWER • 5V DC power supply. 5.5 LOW VOLTAGE DETECTION • A 20K Pot P1 along with ladder network resistors is used to generate required voltages for External Low Voltage Detection. 6.0 SKP FUNCTIONAL BLOCKS The SKP is composed of a H8/36912F single-chip micro-controller, Low Voltage Drop Out Regulator, 2KBit EEPROM, Serial port, 20K POT for LVD &...
The DIP Switch SW2 is used to select led indication on OSCBK/PWM1 and LVD/PWM2 LEDs. The DIP Switch SW4 is used to connect or disconnect led indication on TxD and RxD LEDs during serial communication. Low Voltage Detection is detected using Pot P1 and resistor ladder network. A 2Kbit EEPROM is used to store data during low voltage detection and recover data stored when micon operates at normal voltage.
7.4 RESET CIRCUITRY The reset circuitry is controlled with a Diode 1N4148, a 0.22uF capacitor and a push button switch SW3. 7.5 NMI CIRCUITRY On the SKP a DIP switch SW1.2 is used to control the NMI pin level. For FDT download, SW1 controls the BOOT and USER mode levels.
Page 10
To disconnect OSCBK/PWM1 led indication, turn ON SW2.2 pin 1(i.e., connect SW2.1 pin to GND). Low Voltage Detection: - Turn ON SW2.2 to use LVD/PWM2 led. This led can be used to indicate low voltage detection or lit according to PWM pulse width on port 8. To disconnect LVD/PWM2 led indication, turn ON SW2.1 pin 1(i.e., connect SW2.1 pin to GND).
7.11 EXTERNAL USER INTERFACE The external user interface makes all H8/36912F signals available to the user consistent. The external user interface consists of rows of 12 pin connectors. The diagram indicates which label refers to which row of pins. The external user interface consists of a 26-pin connector. Commonly available 2.54mm (0.100 inch) pitch male headers.
Page 12
If SW1.2 is away from ON position, NMI pin is connected to Vcc and micon is in USER mode. Please refer to diagram 4.c. If SW1.2 is ON, NMI pin is connected to GND and micon is in BOOT mode. Please refer to diagram 4.d.
TxD and RxD led’s connected TxD and RxD led’s disconnected JUMPERS JP1 is a 2-pin jumper, which is placed in series with Vcc path of H8/36912F micro controller for current measurement. This jumper is shorted by default. It is opened to measure current drawn by the micro controller.
Need help?
Do you have a question about the SKP36912G and is the answer not in the manual?
Questions and answers