HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 158
HD6473258P10
Manufacturer Part Number
HD6473258P10
Description
IC H8 MCU OTP 32K 64DIP
Manufacturer
Renesas Electronics America
Series
H8® H8/325r
Datasheet
1.HD6413238F10.pdf
(301 pages)
Specifications of HD6473258P10
Core Processor
H8/300
Core Size
8-Bit
Speed
10MHz
Connectivity
SCI, UART/USART
Number Of I /o
53
Program Memory Size
32KB (32K x 8)
Program Memory Type
OTP
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
64-DIP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Peripherals
-
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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
151
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