DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 381

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

11.6
Application programmers should note that the following types of contention can occur in the free-
running timer.
Contention between FRC Write and Clear
If an internal counter clear signal is generated during the state after an FRC write cycle, the clear
signal takes priority and the write is not performed.
Figure 11.18 shows this type of contention.
Usage Notes
Address
Internal write
signal
Counter clear
signal
FRC
Figure 11.18 FRC Write-Clear Contention
FRC write cycle
T
1
FRC address
N
T
Rev. 4.00 Sep 27, 2006 page 335 of 1130
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Section 11 16-Bit Free-Running Timer
H'0000
REJ09B0327-0400