DF2268FA13V Renesas Electronics America, DF2268FA13V Datasheet - Page 550

• Manufacturer Part Number: DF2268FA13V
• Description: IC H8S/2268 MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2268FA13V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 13MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: LCD, POR, PWM, WDT
• Number Of I /o: 67
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 18 DTMF Generation Circuit
Table 18.2 Frequency Deviation between DTMF Output Signals and Typical Signals
18.4.2
The operating procedure for the DTMF generation circuit is as follows:
1. Set the system clock division ratio for the DTLR based on the frequency of the connected
2. Set the frequencies of the Row (R1 to R4) and Column (C1 to C4) sections based on CLF0,
3. Select the outputs of the Row and Column based on CLOE and RWOE of the DTCR, and set
With the above setting, the set DTMF signal is output from the TONED pin.
Rev. 5.00 Sep. 01, 2009 Page 498 of 656
REJ09B0071-0500
Symbol
R1
R2
R3
R4
C1
C2
C3
C4
system clock. (2.0 to 20.4 MHz, with 400-kHz steps)
CLF1, RWF0 and RWF1 of the DTCR.
DTEN to 1 to operate the DTMF generation circuit.
Operation Flow
Typical Signal (Hz)
697
770
852
941
1209
1336
1477
1633
DTMF Signal Output (Hz)
694.44
769.23
851.06
938.97
1212.12
1333.33
1481.48
1639.34
Frequency Deviation (%)
−0.37
−0.10
−0.11
−0.22
0.26
−0.20
0.30
0.39