HD6473228F10V Renesas Electronics America, HD6473228F10V Datasheet - Page 158

• Manufacturer Part Number: HD6473228F10V
• Description: MCU 5V 32K,PB-FREE 64-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/325r

Specifications of HD6473228F10V

• Core Processor: H8/300
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: SCI, UART/USART
• Number Of I /o: 53
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Peripherals: -

8.1 Overview
The H8/325 series chips include an 8-bit timer module with two channels. Each channel has an
8-bit counter (TCNT) and two time constant registers (TCORA and TCORB) that are constantly
compared with the TCNT value to detect compare-match events. One application of the 8-bit timer
module is to generate a rectangular-wave output with an arbitrary duty factor.
8.1.1 Features
The features of the 8-bit timer module are listed below.
• Selection of four clock sources
• Selection of three ways to clear the counters
• Timer output controlled by two time constants
• Three independent interrupts
8.1.2 Block Diagram
Figure 8-1 shows a block diagram of one channel in the 8-bit timer module. The other channel is
identical.
The counters can be driven by an internal clock signal (Ø/8, Ø/64, or Ø/1024) or an external
clock input (enabling use as an external event counter).
The counters can be cleared on compare-match A or B, or by an external reset signal.
The timer output signal in each channel is controlled by two independent time constants,
enabling the timer to generate output waveforms with an arbitrary duty factor.
Compare-match A and B and overflow interrupts can be requested independently.
Section 8. 8-Bit Timers
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