HD64F3644PV Renesas Electronics America, HD64F3644PV Datasheet - Page 279

• 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: -

FRC Count Timing: FRC is incremented by clock input. Bits CKS1 and CKS0 in TCRX can
select one of three internal clock sources ( /2, /8, /32) or an external clock.
Internal clock
Bits CKS1 and CKS0 in TCRX select one of three internal clock sources ( /2, /8, /32)
created by dividing the system clock ( ). Figure 9.20 shows the increment timing.
External clock
External clock input is selected when bits CKS1 and CKS0 are both set to 1 in TCRX. FRC
increments on the rising edge of the external clock. An external pulse width of at least 1.5
system clocks ( ) is necessary. Shorter pulses will not be counted correctly. Figure 9.21 shows
the timing.
FTCI
(external clock
input pin)
FRC input
clock
FRC
Internal
clock
FRC input
clock
FRC
N – 1
Figure 9.21 Increment Timing with External Clock
Figure 9.20 Increment Timing with Internal Clock
N
N
Rev. 6.00 Sep 12, 2006 page 257 of 526
N – 1
REJ09B0326-0600
Section 9 Timers
N + 1