DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 389

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

TCNT count timing:
Internal
clock
TCNT input
TCNT
Internal clock source
Bits TPSC2 to TPSC0 in TCR select the system clock ( ) or one of three internal clock sources
obtained by prescaling the system clock ( /2, /4, /8).
Figure 10.17 shows the timing.
External clock source
Bits TPSC2 to TPSC0 in TCR select an external clock input pin (TCLKA to TCLKD), and its
valid edge or edges are selected by bits CKEG1 and CKEG0. The rising edge, falling edge, or
both edges can be selected.
The pulse width of the external clock signal must be at least 1.5 system clocks when a single
edge is selected, and at least 2.5 system clocks when both edges are selected. Shorter pulses
will not be counted correctly.
Figure 10.18 shows the timing when both edges are detected.
GR
H'0000
STR bit
IMF
TCNT value
N – 1
Figure 10.17 Count Timing for Internal Clock Sources
Figure 10.16 Periodic Counter Operation
Section 10 16-Bit Integrated Timer Unit (ITU)
N
Rev. 3.00 Sep 27, 2006 page 361 of 872
Counter cleared by general
register compare match
REJ09B0325-0300
N + 1
Time