DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 360

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: 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): 4.5 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: HD64F2148BTE20; HD64F2148BTE20

Section 12 8-Bit Timer (TMR)
12.5.4
TCNT is cleared when compare-match A or compare-match B occurs, depending on the setting of
the CCLR1 and CCLR0 bits in TCR. Figure 12.8 shows the timing of clearing the counter by a
compare-match.
12.5.5
TCNT is cleared at the rising edge of an external reset input, depending on the settings of the
CCLR1 and CCLR0 bits in TCR. The width of the clearing pulse must be at least 1.5 states. Figure
12.9 shows the timing of clearing the counter by an external reset input.
Rev. 3.00 Mar 21, 2006 page 304 of 788
REJ09B0300-0300
Timing of Counter Clear at Compare-Match
TCNT External Reset Timing
Compare-match
signal
TCNT
External reset
input pin
Clear signal
TCNT
Figure 12.9 Timing of Counter Clear by External Reset Input
Figure 12.8 Timing of Counter Clear by Compare-Match
N – 1
N
N
H'00
H'00