EDK2676 Renesas Electronics America, EDK2676 Datasheet - Page 7

• Manufacturer Part Number: EDK2676
• Description: DEV EVALUATION KIT H8S/2676T
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of EDK2676

• Contents: 2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
• For Use With/related Products: H8/2676T
• 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 14.7456MHz. This is multiplied by a factor of two to obtain a default operating frequency of
29.4912MHz.
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.
* Normally not Fitted
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. SRAM
The SRAM device fitted to the board is a 4Mbit device allowing 256kx16. 8-bit addressing is not supported by this EDK.
The SRAM is connected to Chip Select 1 (CS1), which can address the range H’00200000 – H’003FFFFF. However, due to
size of SRAM, the actual addressable range is H’00200000 – H’0027FFFF.
230400* 3
460800* 1
Setting:
Comm.
115200 7
19200 47
38400 23
57600 15
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
Invalid
191
95
setting
BRR
Load Resistor (X1)
Load capacitors (X1)
C
HOICE
Component
Invalid
Invalid
4800
9600
19200
38400
57600
115200
230400
460800
Invalid
Invalid
Actual
Rate
0
Invalid
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Invalid
Invalid
Invalid
ERR
(%)
Baud Rate Register Settings for Serial Communication Rates
R4*
C1,C2
47
23
11
5
3
1
0
Invalid
Invalid
Invalid
191
95
Cct. Ref
setting
T
BRR
ABLE
T
4-2 C
ABLE
19200
38400
57600
115200
230400
Invalid
Invalid
Invalid
1200
2400
4800
9600
Actual
Rate
RYSTAL
1MΩ
22pF
4-3: R
.
Value
1
EMOVABLE
F
0.00
0.00
Invalid
Invalid
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Invalid
REQUENCIES FOR
ERR
(%)
0805 1%
0603 10% 25V
Rating
C
OMPONENT
Invalid
191
47
23
11
5
2
1
0
Invalid
Invalid
Invalid
setting
BRR
RS232
I
NFORMATION
Invalid
300
1200
2400
4800
9600
19200
28800
57600
Invalid
Invalid
Invalid
Actual
Welwyn WCR Series
AVX 0603 3 A 220 KAT
Rate
COMMUNICATION
2
Invalid
0.00
0.00
0.00
0.00
0.00
0.00
-25.00
0.00
Invalid
Invalid
Invalid
Manufacturer
ERR
(%)
130
47
11
5
2
1
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
setting
BRR
110
300
1200
2400
4800
7200
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
Actual
Rate
3
-0.07
0.00
0.00
0.00
0.00
-25.00
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
ERR
(%)
7