HD6473228F10V Renesas Electronics America, HD6473228F10V Datasheet - Page 153

• 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: -

7.8 Application Notes
Application programmers should note that the following types of contention can occur in the free-
running timer.
(1) Contention between FRC Write and Clear: If an internal counter clear signal is generated
during the T
takes priority and the write is not performed.
Figure 7-17 shows this type of contention.
(2) Contention between FRC Write and Increment: If an FRC increment pulse is generated
during the T
priority and the FRC is not incremented.
Figure 7-18 shows this type of contention.
3
3
state of a write cycle to the lower byte of the free-running counter, the clear signal
state of a write cycle to the lower byte of the free-running counter, the write takes
Ø
Internal address bus
Internal write signal
FRC clear signal
FRC
Figure 7-17. FRC Write-Clear Contention
T
FRC lower byte write cycle
1
N
145
FRC address
T
2
T
3
H'0000
Fig 7-17