HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 155

• 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: -

(4) Incrementation Caused by Changing of Internal Clock Source: When an internal clock
source is changed, the changeover may cause the FRC to increment. This depends on the time at
which the clock select bits (CKS1 and CKS0) are rewritten, as shown in table 7-5.
The pulse that increments the FRC is generated at the falling edge of the internal clock source. If
clock sources are changed when the old source is high and the new source is low, as in case No. 3
in table 7-5, the changeover generates a falling edge that triggers the FRC increment clock pulse.
Switching between an internal and external clock source can also cause the FRC to increment.
Figure 7-19. Contention between OCR Write and Compare-Match
Internal address bus
Internal write signal
FRC
OCRA or OCRB
Compare-match
A or B signal
Ø
OCRA or OCRB lower byte write cycle
T
1
N
N
147
OCR address
T
2
Write data
T
3
N + 1
M
Inhibited
Fig 7-19