D12312SVF20V Renesas Electronics America, D12312SVF20V Datasheet - Page 801

• Manufacturer Part Number: D12312SVF20V
• Description: IC H8S/2312S MCU ROMLESS 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVF20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• 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-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

(3) Operating frequency error
Operating frequency is calculated from the received value of the input frequency and the
multiplication or division ratio. The input frequency is input to the LSI and the LSI is operated at
the operating frequency. The expression is given below.
The calculated operating frequency should be checked to ensure that it is within the range of
minimum to maximum frequencies which are available with the clock modes of the specified
device. When it is out of this range, an operating frequency error is generated.
(4) Bit rate
Peripheral operating clock (φ), bit rate (B), clock select (CKS) in the serial mode register (SMR).
The error as calculated by the method below is checked to ensure that it is less than 4%. When it
is 4% or more, a bit-rate selection error is generated.
When the new bit rate is selectable, the rate will be set in the register after sending ACK in
response. The host will send an ACK with the new bit rate for confirmation and the boot program
will response with that rate.
Confirmation
• Confirmation, H'06, (1 byte): Confirmation of a new bit rate
Response
• Response, H'06, (1 byte): Response to confirmation of a new bit rate
The sequence of new bit-rate selection is shown in figure 17.85.
Operating frequency = Input frequency × Multiplication ratio , or
Operating frequency = Input frequency ÷ Division ratio
Error (%) = {[
H'06
H'06
(N+1) * B * 64 * 2
φ * 10
6
(2*n−1)
] − 1} * 100
Rev.7.00 Feb. 14, 2007 page 767 of 1108
REJ09B0089-0700
Section 17 ROM