D12312SVTE25 Renesas Electronics America, D12312SVTE25 Datasheet - Page 799

• Manufacturer Part Number: D12312SVTE25
• Description: MCU 3V 0K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVTE25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: HD6412312SVTE25; HD6412312SVTE25

(11) New Bit-Rate Selection
The boot program will set a new bit rate and return the new bit rate.
This selection should be sent after sending the clock mode selection command.
Command
• Command, H'3F, (1 byte): Selection of new bit rate
• Size (1 byte): The number of bytes that represents the bit rate, input frequency, number of
• Bit rate (2 bytes): New bit rate
• Input frequency (2 bytes): Frequency of the clock input to the boot program
• Number of multiplication ratios (1 byte): The number of multiplication ratios to which the
• Multiplication ratio 1 (1 byte): The value of multiplication or division ratios for the main
• Multiplication ratio 2 (1 byte): The value of multiplication or division ratios for the peripheral
• SUM (1 byte): Checksum
multiplication ratios, and multiplication ratio
One hundredth of the value (e.g. when the value is 19200 bps, the bit rate is H'00C0, which is
D'192.)
This is valid to the hundredths place and represents the value in MHz multiplied by 100. (e.g.
when the value is 20.00 MHz, the input frequency is H'07D0 (= D'2000).)
device can be set. Normally the value is two: main operating frequency and peripheral module
operating frequency.
operating frequency
⎯ Multiplication ratio (1 byte): The value of the multiplication ratio (e.g. when the clock
⎯ Division ratio: The inverse of the division ratio, as a negative number (e.g. when the clock
frequency
⎯ Multiplication ratio (1 byte): The value of the multiplication ratio (e.g. when the clock
⎯ Division ratio: The inverse of the division ratio, as a negative number (e.g. when the clock
frequency is multiplied by four, the multiplication ratio will be H'04. With this LSI it
should be set to H'01.)
frequency is divided by two, the value of division ratio will be H'FE. H'FE = D'-2. With
this LSI it should be set to H'01.)
frequency is multiplied by four, the multiplication ratio will be H'04. With this LSI it
should be set to H'01.)
is divided by two, the value of division ratio will be H'FE. H'FE = D'-2. With this LSI it
should be set to H'01.)
H'3F
Number of
multiplication ratios
SUM
Size
Multiplication
ratio 1
Bit rate
Multiplication
ratio 2
Rev.7.00 Feb. 14, 2007 page 765 of 1108
Input frequency
REJ09B0089-0700
Section 17 ROM