EDK3687 Renesas Electronics America, EDK3687 Datasheet - Page 7

• Manufacturer Part Number: EDK3687
• Description: DEV EVALUATION KIT H8/3687
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of EDK3687

• Contents: 2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
• For Use With/related Products: H8/3687
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

4.2.2. C
The operating crystal frequency has been chosen to support the fastest operation with the fastest serial operating speeds.
The value of the crystal is 18.432MHz.
The following table shows the baud rates and Baud Rate Register (BRR) setting required for each communication rate using
the above default operating speed. It also confirms the resultant baud rate and the bit error rate that can be expected.
* Note: The device used to convert the RS232 serial information to logic signals for the microcontroller is limited to
The user may replace the HC49/U surface mounted AT cut crystal with another of similar type within the operating frequency
of the microcontroller device. Please refer to the hardware manual for the microcontroller for the valid operating range.
Alternatively the user may fit an oscillator module – or provide an external clock source. When providing an oscillator module
or external source it is highly recommended that the load capacitors for the AT crystal are removed from the PCB. These are
physically placed within the PCB outline of the oscillator module for easy location and to ensure they are removed when
using this option.
When changing the crystal frequency the pre-loaded debugging monitor will not function. In this situation the user is
responsible for providing code to evaluate the device away from the default operating speed.
4.2.3. R
This information is provided to allow the replacement of components removed from the board as described in section 4.2.2.
Care must be taken not to damage the tracking around these components. Only use soldering equipment designed for
surface mount assembly and rework.
4.3. SPI EEPROM
The board has been tested with an Atmel AT25040N-10SA-2.7 SPI EEPROM device (Not supplied).
The device should be connected to P30, P31, P32 and P67 using 0R links on R15, R16, R17 and R21. Alternative
connections are available, refer to section 5.3 for more information.
Do not fit the CAN transceiver if the SPI device is fitted while using the settings above.
230400* 2
460800* 0
Setting:
Comm.
115200 4
19200 29
38400 14
57600 9
SMR
Baud
1200
2400
4800
9600
110
300
120kBaud. The rates above this level can only be utilised if the user provides direct logic level communications.
RYSTAL
EMOVABLE COMPONENT INFORMATION
Invalid
Invalid
Invalid
239
119
59
setting
BRR
Load Resistor (X2)
Load Resistor (X3)
Load capacitors (X2)
Load capacitors (X3)
C
HOICE
Component
Invalid
Invalid
2400
4800
9600
19200
38400
57600
115200
192000
576000
Invalid
Actual
Rate
0
Invalid
0.00
0.00
0.00
0.00
0.00
0.00
0.00
-16.67
25.00
Invalid
Invalid
ERR
(%)
Baud Rate Register Settings for Serial Communication Rates
R8
R7
C2,C3
C4,C5
59
29
14
7
3
2
0
Invalid
Invalid
Invalid
Invalid
119
Cct. Ref
setting
T
BRR
ABLE
T
4-2 C
ABLE
9600
18000
36000
48000
144000
Invalid
Invalid
Invalid
Invalid
1200
2400
4800
Actual
Rate
RYSTAL
1MΩ
1MΩ
12pF
15pF
4-3: R
.
Value
1
EMOVABLE
F
-6.25
-16.67
25.00
Invalid
Invalid
0.00
0.00
0.00
0.00
-6.25
Invalid
Invalid
REQUENCIES FOR
ERR
(%)
0805 1%
0805 1%
0603 10% 25V
0603 10% 25V
Rating
C
OMPONENT
Invalid
119
29
14
7
3
1
Invalid
Invalid
Invalid
Invalid
Invalid
setting
BRR
RS232
I
NFORMATION
Invalid
300
1200
2400
4500
9000
18000
Invalid
Invalid
Invalid
Invalid
Invalid
Actual
Welwyn WCR Series
Welwyn WCR Series
AVX 0603 3 A 150 KAT
AVX 0603 3 A 150 KAT
Rate
COMMUNICATION
2
Invalid
0.00
0.00
0.00
-6.25
-6.25
-6.25
Invalid
Invalid
Invalid
Invalid
Invalid
Manufacturer
ERR
(%)
81
29
7
3
1
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
setting
BRR
110
300
1125
2250
4500
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
Actual
Rate
3
-0.22
0.00
-6.25
-6.25
-6.25
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
ERR
(%)
7