EDK7145 Renesas Electronics America, EDK7145 Datasheet - Page 7

• Manufacturer Part Number: EDK7145
• Description: DEV EVALUATION KIT SH7145
• Manufacturer: Renesas Electronics America
• Type: MCUr

Specifications of EDK7145

• Contents: 2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: SH7145
• Lead Free Status / RoHS Status: Not Compliant, 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 11.0592MHz.
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 default communication rate for the EDK is indicated by the shaded selection.
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. SRAM
Positions have been supplied for customer fitting of an SRAM device and associated glue logic.
The SRAM device to be fitted to the board is a 4Mbit device allowing 256k x 16 operation.
230400*
460800*
Setting:
Comm.
115200
19200
38400
57600
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
setting
BRR
Load Resistor (X1)
Load capacitors (X1)
SRAM
Glue Logic
143
Component
71
35
17
11
C
5 115200
2 230400
1 345600
HOICE
Component
Invalid
Invalid
Invalid
Invalid
Actual
Rate
19200
38400
57600
4800
9600
0
Invalid
Invalid
Invalid
Invalid
U3
U2
Cct. Ref
ERR
-25.00 Invalid
(%)
Baud Rate Register Settings for Serial Communication Rates
0.00
0.00
0.00
0.00
0.00
0.00 Invalid
0.00 Invalid
Table 4-4: SRAM and Glue Logic Component Information
R20
C13,C14
Invalid
Invalid
Cct. Ref
setting
T
BRR
ABLE
HM62W16255HLTT-12
SN74LVC08APWR
71
35
17
T
4-2 C
8
4
1
1
ABLE
Invalid
Invalid
Part Number
Invalid
Invalid
Invalid
Actual
Rate
17280
43200
43200
RYSTAL
1MΩ
22pF
4-3: R
.
Value
1200
2400
4800
9600
1
EMOVABLE
F
Invalid
Invalid
Invalid
Invalid
Invalid
REQUENCIES FOR
ERR
-10.00
-25.00 Invalid
(%)
12.50 Invalid
0805 1%
0603 10% 25V
0.00
0.00
0.00
0.00
Rating
C
OMPONENT
Invalid
Invalid
Invalid
setting
BRR
Hitachi
Texas Instruments
195
RS232
71
17
8
4
1
0
I
NFORMATION
Invalid
Invalid
Invalid
Invalid
Invalid
Manufacturer
Actual
Welwyn WCR Series
0603 3 A 220 KAT
Rate
10800
21600
COMMUNICATION
1200
2400
4320
2
110
300
Invalid
Invalid
Invalid
Invalid
Invalid
Manufacturer
ERR
-10.00
(%)
12.50 Invalid
12.50 Invalid
0.19
0.00
0.00
0.00
Invalid
Invalid
Invalid
Invalid
Invalid
setting
BRR
48
17
4
1
0
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
Actual
Rate
1080
2700
5400
3
110
300
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
Invalid
ERR
-10.00
(%)
12.50
12.50
0.19
0.00
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