EDK2215 Renesas Electronics America, EDK2215 Datasheet - Page 7

• Manufacturer Part Number: EDK2215
• Description: DEV EVALUATION KIT H8S/2215
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: Microcontrollerr

Specifications of EDK2215

• Contents: 2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
• For Use With/related Products: H8S/2215
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

4.2.2.
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.
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.
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
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.
The SRAM device fitted to the board is a 4Mbit device allowing 256K x 16bit operation.
The SRAM is mapped to area 2 via CS2n (Port PG2), with a usable address range of H’400000 – H’43FFFF using
address signals A1 to A18..
Glue logic provides the required SRAM control signals from the micon.
invalid
invalid
invalid
setting
BRR
Load Resistor (X1)
Load capacitors (X1)
C
R
239
119
59
29
11
RYSTAL
EMOVABLE COMPONENT INFORMATION
9
3
2
0
Component
invalid
invalid
invalid
Actual
Rate
115200
192000
576000
19200
38400
57600
0
2400
4800
9600
C
HOICE
Invalid
Invalid
Invalid
ERR
(%)
Baud Rate Register Settings for Serial Communication Rates
-16.67 invalid
25.00 invalid
0.00
0.00
0.00
0.00
0.00
0.00
0.00
R25
C18,C19
invalid
invalid
Cct. Ref
setting
T
BRR
ABLE
119
59
29
14
T
4-2 C
7
3
2
0
ABLE
invalid
invalid
invalid
invalid
Actual
Rate
144000
RYSTAL
1MΩ
22pF
4-3: R
Value
18000
36000
48000
1
1200
2400
4800
9600
EMOVABLE
F
invalid
invalid
invalid
invalid
REQUENCIES FOR
ERR
(%)
-16.67 invalid
0805 1%
0603 10% 25V
25.00 invalid
.
-6.25
-6.25 invalid
0.00
0.00
0.00
0.00
Rating
C
OMPONENT
invalid
invalid
invalid
setting
BRR
119
RS232
29
14
7
3
1
I
NFORMATION
invalid
invalid
invalid
invalid
invalid
invalid
Actual
Welwyn WCR Series
AVX 0603 3 A 220 KAT
Rate
COMMUNICATION
18000
2
1200
2400
4500
9000
300
invalid
invalid
invalid
invalid
invalid
invalid
Manufacturer
ERR
(%)
-6.25
-6.25 invalid
-6.25 invalid
0.00
0.00
0.00
invalid
invalid
invalid
invalid
invalid
setting
BRR
81
29
7
3
1
invalid
invalid
invalid
invalid
invalid
invalid
invalid
Actual
Rate
109.76
3
1125
2250
4500
300
invalid
invalid
invalid
invalid
invalid
invalid
invalid
ERR
(%)
-0.22
-6.25
-6.25
-6.25
0.00
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