DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 655

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(d) Clock Mode Selection
The boot program will set the specified clock mode. The program will return the selected clock-
mode information in response to the inquiry after this setting has been made.
The clock-mode selection command should be transmitted after the device-selection commands.
Command
Response
Error Response
(e) Multiplication Ratio Inquiry
The boot program will return the supported multiplication and division ratios.
Command
Response
• Command, H'11, (one byte): Selection of clock mode
• Size (one byte): Amount of data that represents the modes. This is fixed to 1.
• Mode (one byte): A clock mode returned in response to the supported clock mode inquiry.
• SUM (one byte): Checksum
• Response, H'06, (one byte): Response to the clock mode selection command
• Error response, H'91, (one byte)
• ERROR : (one byte): Error code
Even if the clock mode numbers are H'00 and H'01 by a clock mode inquiry, the clock mode
must be selected using these respective values.
• Command, H'22, (one byte): Inquiry regarding multiplication ratio
• Response, H'32, (one byte): Response to the multiplication ratio inquiry
• Size (one byte): The amount of data that represents the number of clock sources and
ACK will be returned when the clock mode matches.
command
multiplication ratios and the multiplication ratios
H'11
H'06
H'22
H'32
Number of
multiplication ratios
···
SUM
H'11: Checksum error
H'22: Clock mode error, that is, the clock mode does not match.
H'91
Size
ERROR
Mode
Size
Multiplica-
tion ratio
SUM
: Error response to the clock mode selection
Number
of types
···
Rev.2.00 May. 28, 2009 Page 615 of 732
REJ09B0059-0200