HD64F7051SFJ20V Renesas Electronics America, HD64F7051SFJ20V Datasheet - Page 313

• Manufacturer Part Number: HD64F7051SFJ20V
• Description: MCU 5V 256K J-TEMP PB-FREE QFP-1
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7050r

Specifications of HD64F7051SFJ20V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, WDT
• Number Of I /o: 102
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 168-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

from the CPU before the next match with the general register, one-shot pulses can be output
consecutively. DSTR cannot be rewritten while the offset one-shot pulse function is being used.
By making the appropriate setting in timer interrupt enable register F (TIERF), an interrupt request
can be sent to the CPU one clock cycle after the corresponding down-counter (DCNT10A to
DCNT10H) reaches 0.
It is possible to forcibly output 0 to the output pin during the down-count by clearing DCNT to 0
(since DST cannot be cleared to 0 by the user program). In this case, DCNT and the relevant DST
bit are automatically cleared to 0 when the DCNT value underflows, and DCNT stops counting.
At the same time, 0 is output to the corresponding external pin.
An example of offset one-shot pulse operation is shown in figure 10.16.
In the example in figure 10.16, the ATU channel 1 free-running counter is started, and offset one-
shot pulse output is performed by means of GR1A output compare-match and the DCNT10A
channel 10 down-counter corresponding to GR1A.
Write to DCNT10A
by user program
Write to GR1A
H'FFFF
H'FFFF
H'0000
H'0000
TOA10
data B
data A
GR1A
Figure 10.16 Example of Offset One-Shot Pulse Operation
(dataA)
Offset
One-
shot
pulse
Counter value
TCNT1
Down-count value
DCNT10A
Rev. 5.00 Jan 06, 2006 page 291 of 818
Section 10 Advanced Timer Unit (ATU)
(dataB)
Offset
One-shot
pulse
REJ09B0273-0500
Time