D12312SVTE25 Renesas Electronics America, D12312SVTE25 Datasheet - Page 414

• Manufacturer Part Number: D12312SVTE25
• Description: MCU 3V 0K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVTE25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 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: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: HD6412312SVTE25; HD6412312SVTE25

Section 9 16-Bit Timer Pulse Unit (TPU)
9.7
Note that the kinds of operation and contention described below can occur during TPU operation.
Input Clock Restrictions: The input clock pulse width must be at least 1.5 states in the case of
single-edge detection, and at least 2.5 states in the case of both-edge detection. The TPU will not
operate properly with a narrower pulse width.
In phase counting mode, the phase difference and overlap between the two input clocks must be at
least 1.5 states, and the pulse width must be at least 2.5 states. Figure 9.48 shows the input clock
conditions in phase counting mode.
Caution on Period Setting: When counter clearing by compare match is set, TCNT is cleared in
the final state in which it matches the TGR value (the point at which the count value matched by
TCNT is updated). Consequently, the actual counter frequency is given by the following formula:
Where
Rev.7.00 Feb. 14, 2007 page 380 of 1108
REJ09B0089-0700
TCLKA
(TCLKC)
TCLKB
(TCLKD)
Notes: Phase difference and overlap
Figure 9.48 Phase Difference, Overlap, and Pulse Width in Phase Counting Mode
f =
Usage Notes
f: Counter frequency
φ: Operating frequency
N: TGR set value
Pulse width
(N + 1)
φ
Overlap
Pulse width
Phase
differ-
ence
Overlap
: 1.5 states or more
: 2.5 states or more
Phase
differ-
ence
Pulse width
Pulse width
Pulse width