HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 248

• Manufacturer Part Number: HD64F36077GHV
• Description: 16BIT MCU FLASH 56K, SMD, LQFP64
• Manufacturer: Renesas Electronics America

Specifications of HD64F36077GHV

• No. Of I/o's: 47
• Ram Memory Size: 4KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 4.5V
• Core Size: 16bit
• Program Memory Size: 56KB
• Oscillator Type: External Only
• Controller Family/series: H8/300H
• Peripherals: ADC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Section 13 Timer Z
Rev. 1.00 Sep. 16, 2005 Page 218 of 490
REJ09B0216-0100
External clock input pin
B. External clock operation
TCNT input
Figure 13.11 Count Timing at External Clock Operation (Both Edges Detected)
An external clock input pin (TCLK) can be selected by bits TPSC2 to TPSC0 in TCR, and
a detection edge can be selected by bits CKEG1 and CKEG0. To detect an external clock,
the rising edge, falling edge, or both edges can be selected. The pulse width of the external
clock needs two or more system clocks. Note that an external clock does not operate
correctly with the lower pulse width.
Figure 13.11 illustrates the detection timing of the rising and falling edges.
TCNT
φ
N-1
N
N+1