HD64F3644DV Renesas Electronics America, HD64F3644DV Datasheet - Page 257

• Manufacturer Part Number: HD64F3644DV
• Description: IC H8/3644 MCU FLASH 64QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644DV

• 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: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Contention between Compare Match A and B: If compare match A and B occur
simultaneously, any conflict between the output selections for compare match A and compare
match B is resolved by following the priority order in table 9.12.
Table 9.12 Timer Output Priority Order
Output Setting
Toggle output
1 output
0 output
No change
Internal Clock Switching and Counter Operation: Depending on the timing, TCNTV may be
incremented by a switch between different internal clock sources. Table 9.13 shows the relation
between internal clock switchover timing (by writing to bits CKS1 and CKS0) and TCNTV
operation.
When TCNTV is internally clocked, an increment pulse is generated from the falling edge of an
internal clock signal, which is divided from the system clock ( ). For this reason, in a case like
No. 3 in table 9.13 where the switch is from a high clock signal to a low clock signal, the
switchover is seen as a falling edge, causing TCNTV to increment.
TCNTV can also be incremented by a switch between internal and external clocks.
Priority
High
Low
Rev. 6.00 Sep 12, 2006 page 235 of 526
REJ09B0326-0600
Section 9 Timers