HD64F3644PV Renesas Electronics America, HD64F3644PV Datasheet - Page 247

• Manufacturer Part Number: HD64F3644PV
• Description: IC H8/3644 MCU FLASH 32K 64SDIP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644PV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-SDIP (0.750", 19.05mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

TCNTV Increment Timing: TCNTV is incremented by an input (internal or external) clock.
Internal clock
One of six clocks ( /128, /64, /32, /16, /8, /4) divided from the system clock ( ) can be
selected by bits CKS2 to CKS0 in TCRV0 and bit ICKS0 in TCRV1. Figure 9.4 shows the
timing.
External clock
Incrementation on the rising edge, falling edge, or both edges of the external clock can be
selected by bits CKS2 to CKS0 in TCRV0.
The external clock pulse width should be at least 1.5 system clocks ( ) when a single edge is
counted, and at least 2.5 system clocks when both edges are counted. Shorter pulses will not be
counted correctly.
Figure 9.5 shows the timing when both the rising and falling edges of the external clock are
selected.
Internal
clock
FRC
input
TCNTV
input
TCNTV
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Figure 9.4 Increment Timing with Internal Clock
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Rev. 6.00 Sep 12, 2006 page 225 of 526
REJ09B0326-0600
Section 9 Timers
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