EDOSK2674 Renesas Electronics America, EDOSK2674 Datasheet - Page 10

• Manufacturer Part Number: EDOSK2674
• Description: DEV EVALUATION KIT H8S/2674
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of EDOSK2674

• Contents: EDOSK (Evaluation Development Operating System Kit) Board
• For Use With/related Products: H8S/2674R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2.9. R
The EDOSK is supplied with a Real Time Clock (RTC) and battery backup (when fitted) for current date and time information.
A cell retainer (J11) is used to hold a cell battery to keep time data correct when system supply is removed.
The RTC is a Dallas/Maxim DS1672U device that interfaces to the H8/2674R via an I2C bus.
A coin-cell battery between 1.3V and 3.6V of 12mm diameter and 3.175mm maximum height may be inserted into the
EDOSK to allow timekeeping even when power to the board is removed.
Battery Reference: BR1216, CR1216, BR1220, CL1220, CR1220 and BR1225
2.10. S
The EDOSK provides two buttons for influencing the operation of the board. The purpose of each button is clearly marked
next to it. Refer to the board layout for positions (Section 1).
2.11. I
Three red LEDs are fitted to the PCB. The function of each red LED is clearly marked on the silk screen of the PCB. Please
refer to the board layout diagram for position information (Section 1).
POWER: When the board is connected to a power source this led will illuminate.
BOOT: When the EDOSK has been placed into Boot mode this LED will illuminate.
TIMER: Dedicated for user control and is driven by the MCU Watchdog Timer Overflow pin.
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NDICATORS
WITCHES
EAL
This button provides the MCU with a timed reset pulse of at least 250mS.
The NMI button on this EDOSK provides the MCU with a positive pulse to generate a non-maskable interrupt.
SCL – Serial Clock (MCU port pin 31)
SDA – Serial Data (MCU port pin 32)
T
Reset Switch
NMI Switch
IME
C
LOCK
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