DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 409

• Manufacturer Part Number: DF2148ATE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148ATE20

• 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: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2148ATE20; HD64F2148ATE20

12.3.2
Setting of Compare-Match Flags A and B (CMFA, CMFB)
The CMFA and CMFB flags in TCSR are set to 1 by a compare-match signal generated when the
TCOR and TCNT values match. The compare-match signal is generated at the last state in which
the match is true, just before the timer counter is updated.
Therefore, when TCOR and TCNT match, the compare-match signal is not generated until the
next incrementation clock input. Figure 12.4 shows this timing.
External clock
input pin
TCNT input
clock
TCNT
TCNT
TCOR
Compare-match
signal
CMF
Compare-Match Timing
Figure 12.3 Count Timing for External Clock Input
N – 1
Figure 12.4 Timing of CMF Setting
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Rev. 4.00 Sep 27, 2006 page 363 of 1130
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N + 1
Section 12 8-Bit Timers
REJ09B0327-0400
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