HD64F3687GFPV Renesas Electronics America, HD64F3687GFPV Datasheet - Page 236

• Manufacturer Part Number: HD64F3687GFPV
• Description: IC H8 MCU FLASH 56K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F3687GFPV

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 45
• Program Memory Size: 56KB (56K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-LQFP
• Package: 64LQFP
• Family Name: H8
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 16|32 Bit
• Number Of Programmable I/os: 45
• Interface Type: I2C/SCI
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• For Use With: R0K436079S000BE - KIT DEV FOR H8/36079 W/COMPILER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 13 Timer Z
Rev.5.00 Nov. 02, 2005 Page 202 of 500
REJ09B0027-0500
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
N-1
N
N+1