HD6473837H Renesas Electronics America, HD6473837H Datasheet - Page 210

• Manufacturer Part Number: HD6473837H
• Description: IC H8 MCU OTP 60K 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD6473837H

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: SCI
• Peripherals: LCD, PWM
• Number Of I /o: 84
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: OTP
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Auto-Reload Timer Operation: Setting bit TMC7 in TMC to 1 causes timer C to function as an
8-bit auto-reload timer. When a reload value is set in TLC, the same value is loaded into TCC,
becoming the value from which TCC starts its count.
After the count value in TCC reaches H'FF (H'00), the next clock signal input causes timer C to
overflow (underflow). The TLC value is then loaded TCC, and the count continues from that
value. The overflow (underflow) period can be set within a range from 1 to 256 input clocks,
depending on the TLC value.
The clock sources, up/down control, and interrupts in auto-reload mode are the same as in interval
mode.
In auto-reload mode (TMC7 = 1), when a new value is set in TLC, the TLC value is also set in
TCC.
Event Counter Operation: Timer C can operate as an event counter, counting an event signal
input at pin TMIC. External event counting is selected by setting TMC bits TMC2 to TMC0 to all
1s (111). TCC counts up or down at the rising or falling edge of the input at pin TMIC.
When timer C is used to count external event inputs, bit IRQ2 in port mode register 1 (PMR1)
should be set to 1, and bit IEN2 in interrupt enable register 1 (IENR1) should be cleared to 0 to
disable IRQ2 interrupt requests.
TCC Up/Down Control by Hardware: The counting direction of timer C can be controlled by
input at pin UD. When bit TMC6 in TMC is set to 1, high-level input at the UD pin selects down-
counting, while low-level input selects up-counting.
When using input at pin UD for this control function, set the UD bit in port mode register 2
(PMR2) to 1.
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