DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 307

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 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: -
• Other names: HD64F2148BTE20; HD64F2148BTE20

10.5
A PWM waveform like the one shown in figure 10.2 is output from the PWMX pin. The value in
DADR corresponds to the total width (T
(256 pulses when CFS = 0, 64 pulses when CFS = 1). When OS = 0, this waveform is directly
output. When OS = 1, the output waveform is inverted, and the DADR value corresponds to the
total width (T
output available.
Operation
Notes:
Base cycle
(T × 64 or T × 256)
H
) of the high (1) output pulses. Figures 10.3 and 10.4 show the types of waveform
t
L
t
f
T: Resolution
T
(When CFS = 0, m = 256
When CFS = 1, m = 64)
L
= ∑ t
n = 1
m
Ln
(OS = 0)
Figure 10.2 PWM D/A Operation
L
) of the low (0) pulses output in one conversion cycle
1 conversion cycle
(T × 2
14
(= 16384))
Rev. 3.00 Mar 21, 2006 page 251 of 788
Section 10 14-Bit PWM Timer (PWMX)
REJ09B0300-0300