HD64F3048VTF8 Renesas Electronics America, HD64F3048VTF8 Datasheet - Page 382

• Manufacturer Part Number: HD64F3048VTF8
• Description: IC H8 MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048VTF8

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 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: HD64F3048VX8

Section 10 16-Bit Integrated Timer Unit (ITU)
Rev. 7.00 Sep 21, 2005 page 356 of 878
REJ09B0259-0700
Internal
clock
TCNT input
TCNT
TCNT count timing
GR
H'0000
STR bit
IMF
Internal clock source
Bits TPSC2 to TPSC0 in TCR select the system clock ( ) or one of three internal clock
sources obtained by prescaling the system clock ( /2, /4, /8).
Figure 10.17 shows the timing.
External clock source
Bits TPSC2 to TPSC0 in TCR select an external clock input pin (TCLKA to TCLKD), and
its valid edge or edges are selected by bits CKEG1 and CKEG0. The rising edge, falling
edge, or both edges can be selected.
The pulse width of the external clock signal must be at least 1.5 system clocks when a
single edge is selected, and at least 2.5 system clocks when both edges are selected. Shorter
pulses will not be counted correctly.
Figure 10.18 shows the timing when both edges are detected.
TCNT value
N – 1
Figure 10.17 Count Timing for Internal Clock Sources
Figure 10.16 Periodic Counter Operation
N
Counter cleared by general
register compare match
N + 1
Time