EDK2638 Renesas Electronics America, EDK2638 Datasheet - Page 9

• Manufacturer Part Number: EDK2638
• Description: DEV EVALUATION KIT H8S/2638
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of EDK2638

• Contents: 2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
• For Use With/related Products: H8S/2638
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

4.5. SRAM A
External access timing is defined by several registers, allowing different types of devices to be addressed. The
registers for the selection of wait states and signal extensions are given below with recommended values for the
EDK.
Please refer to the hardware manual for the microcontroller for more information on these register settings.
4.6. LED
The EDK has four red LEDs. The function of each LED is clearly marked on the silk screen of the PCB. Please refer to the
board layout diagram for position information (Section 3).
When the board is connected to a power source the Power (PWR) led will illuminate. The Boot mode indication LED will
illuminate when the microcontroller has been placed into Boot mode. Please see section 0 for more details of this function.
There are two LEDs dedicated for user control these are marked USR1 and USR2. Each LED will illuminate when the port
pin is in a logical high state.
The user LEDs are connected to the following ports:
ABWCR
ASTCR
WCRL
BCRH
PFCR
Register
S
FED0
FED1
FED3
FED4
FDEB
CCESS
Address
T
USR1
USR2
IMING
Identifier
LED
H’FE
H’FF
H’FC
H’10
H’0A
Setting for EDK
Recommended
P14
P15
Port
Pin
T
ABLE
4-1: SRAM A
93
94
Microcontroller
T
Address Bus Width Control Register
(Set Area 0(SRAM) to 16-bit access)
Access State Control Register
(Initial values - 3 State Access)
Wait Control Register
(Wait not inserted when external space area 0 is accessed)
Bus Control Register
(No Idle cycle added in external access)
Pin Function Control Register
(Enable A8–A17 address output)
ABLE
4-1: LED P
Pin
CCESS
ORT
C
C
P14/PO12/TIOCA1/IRQ0
P15/PO13/TIOCB1/TCLKC
ONTROL
ONNECTIONS
Pin Functions on Port Pin
R
EGISTERS
Function
9