HD64F3067RF20 Renesas Electronics America, HD64F3067RF20 Datasheet - Page 439

• Manufacturer Part Number: HD64F3067RF20
• Description: IC H8 MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3067RF20

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• 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): 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-QFP
• Package: 100PQFP
• Family Name: H8
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 16|32 Bit
• Number Of Programmable I/os: 70
• Interface Type: SCI
• On-chip Adc: 8-chx10-bit
• On-chip Dac: 2-chx8-bit
• Number Of Timers: 7
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

10.4
10.4.1
TCNT is incremented by input clock pulses (either internal or external).
Internal Clock: Three different internal clock signals ( /8, /64, or /8192) divided from the
system clock ( ) can be selected, by setting bits CKS2 to CKS0 in TCR. Figure 10.8 shows the
count timing.
Note: Even when the same internal clock is selected for both the 16- and 8-bit timers, they do
External Clock: Three incrementation methods can be selected by setting bits CKS2 to CKS0 in
TCR: on the rising edge, the falling edge, and both rising and falling edges.
The pulse width of the external clock signal must be at least 1.5 serial 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 10.9 shows the timing for incrementation on both edges of the external clock signal.
TCNT input clock
Internal clock
TCNT
not operate in the same manner because the count-up edge differs.
Operation
TCNT Count Timing
Figure 10.8 Count Timing for Internal Clock Input
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Rev. 4.00 Jan 26, 2006 page 415 of 938
Section 10 8-Bit Timers
REJ09B0276-0400
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