HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 234

• Manufacturer Part Number: HD6473258P10
• Description: IC H8 MCU OTP 32K 64DIP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/325r

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: -

14.1 Overview
The H8/325 series chips have a built-in clock pulse generator (CPG) consisting of an oscillator
circuit, a system clock divider, an E clock divider, and a prescaler. The prescaler generates clock
signals for the on-chip supporting modules.
14.1.1 Block Diagram
14.2 Oscillator Circuit
If an external crystal is connected across the EXTAL and XTAL pins, the on-chip oscillator circuit
generates a clock signal for the system clock divider. Alternatively, an external clock signal can be
applied to the EXTAL pin.
(1) Connecting an External Crystal
An AT-cut parallel resonating crystal should be used.
EXTAL
XTAL
Circuit Configuration: An external crystal can be connected as in the example in figure 14-2.
Oscillator
circuit
Figure 14-1. Block Diagram of Clock Pulse Generator
Section 14. Clock Pulse Generator
Divider
÷ 2
231
Ø
Divider
÷ 8
E
CPG
Prescaler
Ø/2 to Ø/4096