EDOSK2674 Renesas Electronics America, EDOSK2674 Datasheet - Page 17

• 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

D1 provides the Vcc supply and prevents the cell battery (or auxiliary supply) from powering all of the board when powered
down.
D2 provides protection for the cell battery (or auxiliary supply) against accidental charging.
R (when fitted) allows charge current to be selected or charging by the RTC device.
The following options are available:
Backup power option
No cell battery, No auxiliary supply,
None rechargeable cell battery, None
rechargeable auxiliary supply
Rechargeable cell battery,
Rechargeable auxiliary supply
4.3. R
Both Reset and NMI switches may be activated remotely.
By attaching 2-pin headers to J10 and J9, normally-open switches can be attached via flying leads.
J10 – NMI
J9 – RESET
The NMI switch signal is de-bounced on the EDOSK board with a time constant T
The RESET switch signal is de-bounced on the EDOSK board with time constants T
seconds.
4.4. C
The MCU crystal frequency has been chosen to support the fastest operation. The value of the crystal is 33.0000MHz.
EMOTE
RYSTAL
S
C
WITCH
HOICE
Cell Battery
Component configuration
D1 and D2 fitted.
R not fitted.
D1 and D2 fitted.
R not fitted.
D1 fitted.
D2 optional.
R=3.3/I
D1 not Fitted.
D2 optional.
R=0 ohms.
J8
charge
D2
R
D1
3V3
RC
RTC Backup
=0.47 seconds.
Comments
Default configuration.
No method of recharging cell or
auxiliary supply.
Default configuration.
No method of recharging cell or
auxiliary supply.
Backup supply is charged through D1.
RTC trickle charge is not used.
Backup supply is charged through
RTC trickle charge network.
EDOSK will not operate if backup
supply fails.
RC(off)
=0.03 seconds and T
RC(on)
=0.22
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