DF2117VT20V Renesas Electronics America, DF2117VT20V Datasheet - Page 310

• 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: -

(b)
Immediately after a reset, the TPU's TCNT counters are all designated as free-running counters.
When the relevant bit in TSTR is set to 1 the corresponding TCNT counter starts up-count
operation as a free-running counter. When TCNT overflows (from H'FFFF to H'0000), the TCFV
bit in TSR is set to 1. If the value of the corresponding TCIEV bit in TIER is 1 at this point, the
TPU requests an interrupt. After overflow, TCNT starts counting up again from H'0000. Figure
10.7 illustrates free-running counter operation.
When compare match is selected as the TCNT clearing source, the TCNT counter for the relevant
channel performs periodic count operation. The TGR register for setting the period is designated
as an output compare register, and counter clearing by compare match is selected by means of bits
CCLR2 to CCLR0 in TCR. After the settings have been made, TCNT starts up-count operation as
periodic counter when the corresponding bit in TSTR is set to 1. When the count value matches
the value in TGR, the TGF bit in TSR is set to 1 and TCNT is cleared to H'0000. If the value of
the corresponding TGIE bit in TIER is 1 at this point, the TPU requests an interrupt. After a
compare match, TCNT starts counting up again from H'0000. Figure 10.8 illustrates periodic
counter operation.
Rev. 2.00 Sep. 28, 2009 Page 268 of 994
REJ09B0452-0200
Free-running count operation and periodic count operation
H'FFFF
H'0000
CST bit
TCFV
TCNT value
Figure 10.7 Free-Running Counter Operation
Time