HD64F3642AH Renesas Electronics America, HD64F3642AH Datasheet - Page 236

• Manufacturer Part Number: HD64F3642AH
• Description: IC H8 MCU FLASH 16K 64QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3642AH

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 16KB (16K 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-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 9 Timers
Auto-Reload Timer Operation: Setting bit TMB17 in TMB1 to 1 causes timer B1 to function as
an 8-bit auto-reload timer. When a reload value is set in TLB1, the same value is loaded into
TCB1, becoming the value from which TCB1 starts its count.
After the count value in TCB1 reaches H'FF, the next clock signal input causes timer B1 to
overflow. The TLB1 value is then loaded into TCB1, and the count continues from that value. The
overflow period can be set within a range from 1 to 256 input clocks, depending on the TLB1
value.
The clock sources and interrupts in auto-reload mode are the same as in interval mode.
In auto-reload mode (TMB17 = 1), when a new value is set in TLB1, the TLB1 value is also set in
TCB1.
Event Counter Operation: Timer B1 can operate as an event counter, counting rising or falling
edges of an external event signal input at pin TMIB. External event counting is selected by setting
bits TMB12 to TMB10 in timer mode register B1 (TMB1) to all 1s (111).
When timer B1 is used to count external event input, bit INTEN6 in IENR3 should be cleared to 0
to disable INT
9.3.4
Table 9.7 summarizes the timer B1 operation states.
Table 9.7
Operation Mode
TCB1 Interval
TMB1
Rev. 6.00 Sep 12, 2006 page 214 of 526
REJ09B0326-0600
Auto reload
Timer B1 Operation States
Timer B1 Operation States
6
interrupt requests.
Reset
Reset
Reset
Reset
Active
Functions
Functions
Functions
Sleep
Functions
Functions
Retained
Watch
Halted
Halted
Retained
Sub-
active
Halted
Halted
Retained Retained Retained
Halted
Halted
Sub-
sleep
Standby
Halted
Halted