DF2117VT20V Renesas Electronics America, DF2117VT20V Datasheet - Page 249

• Manufacturer Part Number: DF2117VT20V
• Description: MCU 16BIT FLASH 3V 160K 144-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2117VT20V

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: FIFO, I²C, LPC, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 112
• Program Memory Size: 160KB (160K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-TQFP, 144-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

8.3.5
PWMPRE are 8-bit readable/writable registers used to set the PWM cycle. The initial value is
H'00.
When the PWMPRE value is n, the PWM cycle is calculated as follows.
(1)
Table 8.3
Internal Clock
Frequency
φ
φ/2
φ/4
φ/8
8-Bit Single Pulse Mode
PWM cycle = [255 × (n + 1)] / internal clock frequency (0 ≤ n ≤ 255)
PWM Prescaler Registers 0 to 5 (PWMPRE0 to PWMPRE5)
Resolution, PWM Conversion Period, and Carrier Frequency (8-Bit Counter
Operation) when φ = 20 MHz
Resolution
50 ns
100 ns
200 ns
400 ns
PWM Conversion Period
Min.
12.8 μs
25.5 μs
51.2 μs
102 μs
Max.
3.3 ms
6.5 ms
13.1 ms
26.1 ms
Rev. 2.00 Sep. 28, 2009 Page 207 of 994
Carrier Frequency
Single Pulse Mode
Min.
306.4 Hz
153.2 Hz
76.6 Hz
38.3 Hz
REJ09B0452-0200
Max.
78.4 kHz
39.2 kHz
19.6 kHz
9.8 kHz