DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 337

• Manufacturer Part Number: DF2148ATE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148ATE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, 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 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: HD64F2148ATE20; HD64F2148ATE20

10.1
This LSI have an on-chip 14-bit pulse-width modulator (PWM) with two output channels.
Each channel can be connected to an external low-pass filter to operate as a 14-bit D/A converter.
Both channels share the same counter (DACNT) and control register (DACR).
10.1.1
The features of the 14-bit PWM (D/A) are listed below.
The pulse is subdivided into multiple base cycles to reduce ripple.
Two resolution settings and two base cycle settings are available
The resolution can be set equal to one or two system clock cycles. The base cycle can be set
equal to T 64 or T
Four operating rates
The two resolution settings and two base cycle settings combine to give a selection of four
operating rates.
Overview
Features
Section 10 14-Bit PWM Timer (PWMX)
256, where T is the resolution.
Rev. 4.00 Sep 27, 2006 page 291 of 1130
Section 10 14-Bit PWM Timer (PWMX)
REJ09B0327-0400