EDOSK2674 Renesas Electronics America, EDOSK2674 Datasheet - Page 7

• 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.
2.1. P
The EDOSK hardware requires a power supply of +5V. Since total power consumption can vary widely due to external
connections, port states, and memory configuration, use a power supply capable of providing at least 500mA at +5V DC ±
5%.
The design is specified for evaluation of the MCU and so does not include circuitry for supply filtering/noise reduction, under
voltage protection, over current protection or reversed polarity protection. Caution should be used when selecting and using
a power supply.
The power connector on the EDOSK is a 2.5mm Barrel connector. The center pin is the positive connection.
Caution: Existing customers using E6000 products note that the polarity of this board is opposite to that for the
2.2. O
The H8/2674R has only two modes of operation set by jumper configuration:
Mode 1: (MD2=0, MD1=0, MD0=1) Advanced, External Data Bus initial Width is 16 bits. – EDOSK NORMAL mode.
Mode 2: (MD2=0, MD1=1, MD0=0) Advanced, External Data Bus initial Width is 8 bits. – EDOSK BOOT mode.
The H8/2674R has no internal Flash memory. On power-up the EDOSK mode (Boot or Normal) selects the Flash memory
from which the H8/2674R first accesses.
EDOSK2674 B
The EDOSK2674 is designed around a H8/2674R MCU and includes FLASH memory, SDRAM, real-time clock, an
interface to a local expansion card, an interface for IO connections, a serial port and a LAN port.
The figure below shows the block diagram of the EDOSK2674 board.
OWER
E6000. Use of the E6000 power supply with this board will damage both board and power supply.
PERATING MODES
S
UPPLY
SDRAM
FLASH
FLASH
512KByte
4MByte
8MByte
Main
Boot
Expansion Connector
Memory Mapped Peripherals
LOCK
D
IAGRAM
F
IGURE
F
IGURE
2-2: P
10Mbps
LAN
2-1: EDOSK B
OWER
2674R
LQFP144
H8S
S
UPPLY
LOCK
C
ONNECTION
D
RJ45
IAGRAM
Auxiliary I/O Connector
3.3v Reg
RS232
I/O Peripherals
x2
RTC
Power
(Female)
BATT
XTAL
Jack
DB9
&
7