EDK2628 Renesas Electronics America, EDK2628 Datasheet - Page 7

• Manufacturer Part Number: EDK2628
• Description: DEV EVALUATION KIT H8S/2628
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of EDK2628

• Contents: 2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
• For Use With/related Products: H8S/2628
• 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 and provide the most reliable CAN
communication. The value of the crystal is 20MHz.
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.
230400* 2
460800* 0
Setting:
Comm.
115200 4
19200 32
38400 15
57600 10
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
129
64
setting
BRR
Load Resistor (X1)
Load capacitors (X1)
C
HOICE
Component
invalid
invalid
4808
9615
18939
39063
56818
125000
208333
625000
invalid
invalid
Actual
Rate
0
invalid
invalid
0.16
0.16
-1.36
1.73
-1.36
8.51
-9.58
35.63
invalid
invalid
ERR
(%)
Baud Rate Register Settings for Serial Communication Rates
R4
C1,C2
invalid
invalid
32
15
7
3
2
0
invalid
invalid
129
64
Cct. Ref
setting
T
BRR
ABLE
T
4-2 C
ABLE
19531
39063
52083
156250
invalid
invalid
invalid
invalid
1202
2404
4735
9766
Actual
Rate
RYSTAL
1MΩ
22Pf
4-3: R
.
Value
1
EMOVABLE
F
invalid
invalid
0.16
0.16
-1.36
1.73
1.73
1.73
-9.58
35.63
invalid
invalid
REQUENCIES FOR
ERR
(%)
0805 1%
0603 10% 25V
Rating
C
OMPONENT
invalid
129
32
15
7
3
1
0
invalid
invalid
invalid
invalid
setting
BRR
RS232
I
NFORMATION
invalid
300
1184
2441
4883
9766
19531
39063
invalid
invalid
invalid
invalid
Actual
Welwyn WCR Series
AVX 0603 3 A 220 KAT
Rate
COMMUNICATION
2
invalid
0.16
-1.36
1.73
1.73
1.73
1.73
1.73
invalid
invalid
invalid
invalid
Manufacturer
ERR
(%)
88
32
7
3
1
0
invalid
invalid
invalid
invalid
invalid
invalid
setting
BRR
110
296
1221
2441
4883
9766
invalid
invalid
invalid
invalid
invalid
invalid
Actual
Rate
3
-0.25
-1.36
1.73
1.73
1.73
1.73
invalid
invalid
invalid
invalid
invalid
invalid
ERR
(%)
7