DF2378BVFQ35WV Renesas Electronics America, DF2378BVFQ35WV Datasheet - Page 688

• Manufacturer Part Number: DF2378BVFQ35WV
• Description: IC H8S/2378 MCU FLASH 144-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2378BVFQ35WV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 35MHz
• Connectivity: I²C, IrDA, SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 97
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-QFP
• For Use With: EDK2378 - DEV EVAL KIT FOR H8S/2378
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 11 16-Bit Timer Pulse Unit (TPU)
11.10.3 Caution on Cycle Setting
When counter clearing by compare match is set, TCNT is cleared in the final state in which it
matches the TGR value (the point at which the count value matched by TCNT is updated).
Consequently, the actual counter frequency is given by the following formula:
Where f: Counter frequency
11.10.4 Contention between TCNT Write and Clear Operations
If the counter clearing signal is generated in the T
takes precedence and the TCNT write is not performed. Figure 11.45 shows the timing in this
case.
Rev.7.00 Mar. 18, 2009 page 620 of 1136
REJ09B0109-0700
f =
φ: Operating frequency
N: TGR set value
φ
Address
Write signal
Counter clearing
signal
TCNT
Figure 11.45 Contention between TCNT Write and Clear Operations
(N + 1)
φ
N
TCNT write cycle
TCNT address
T
1
2
state of a TCNT write cycle, TCNT clearing
T
2
H'0000