DF2117VT20V Renesas Electronics America, DF2117VT20V Datasheet - Page 359

• Manufacturer Part Number: DF2117VT20V
• Description: MCU 16BIT FLASH 3V 160K 144-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2117VT20V

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: FIFO, I²C, LPC, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 112
• Program Memory Size: 160KB (160K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-TQFP, 144-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

11.4
The TCM operates in timer mode or cycle measurement mode. TCM is in timer mode after a reset.
11.4.1
When the TCMMDS bit in TCMCR is cleared to 0, TCM operates in timer mode.
(1)
TCMCNT operates as a free running counter in timer mode. TCMCNT starts counting up when
the CST bit in TCMCR is set to 1. When TCMCNT overflows (the value changes from H'FFFF to
H'0000), the OVF bit in TCMCSR is set to 1 and an interrupt request is generated if the OVIE bit
in TCMIER is 1. Figure 11.2 shows an example of free running counter operation. In addition,
figure 11.3 shows TCMCNT count timing of external clock operation. The external clock should
have a pulse width of no less than 1.5 cycles. The counter will not operate correctly if the pulses
are narrower than this.
Counter Operation
φ
φ/4
TCMCNT
input clock
TCMCNT
φ
TCMCKI
TCMCNT
input clock
TCMCNT
Operation
Timer Mode
Figure 11.3 Count Timing of External Clock Operation (Falling Edges)
Figure 11.2 Example of Free Running Counter Operation
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