UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 584

• Manufacturer Part Number: UPD70F3451GC-UBT-A
• Description: MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

Specifications of UPD70F3451GC-UBT-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: CSI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 44
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 10x12b, 4x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

<R>
582
Operating clock
(1) Anytime rewriting mode
Note After writing to a register (TABnCCR0, TABnCCR2, TABnCCR3, TABnOPT1, TAAnCCR0, or TAAnCCR1),
Rewriting during period <1> (rewriting during up counting)
Rewriting during period <2> (rewriting during down counting)
If the newly rewritten value is greater than the value of the 16-bit counter, there is no problem because it will
match the value of the 16-bit counter. If the new value is less than the value of the 16-bit counter, it will not
match the value of the counter. As a result, the 16-bit counter overflows and continues counting up from
0000H until it matches the register value again, and the correct PWM waveform is not output.
A match with the value of the 16-bit counter is ignored during counting down. Therefore, the rewritten period
value is reflected starting from counting up in the next cycle as a match point.
CCR0 buffer
TABnCCR0
This mode is specified by setting the TABnOPT0.TABnCMS bit is 1. The setting of the TABnOPT2.TABnRDE
bit is ignored.
In this mode, the value written to each register with a transfer function is immediately transferred to an internal
buffer register and compared with the count value. If a register with transfer function is rewritten in this mode
after the count value of the 16-bit counter matches the value of the TABnCCRm register, the rewritten value is
not reflected because the next match is ignored after the first match has occurred. If the register is rewritten
during up counting, the new register value becomes valid after the counter has started counting down.
(a) Rewriting TABnCCR0 register
register
register
the value is transferred to the internal buffer register during the fourth cycle of the operating clock.
However, the value of only the TABnCCR1 register is transferred after 5 more clocks.
(f
Even if the TABnCCR0 register is rewritten in the anytime rewriting mode, the new value may not be
reflected in some cases.
XX
/2)
b
b
counter
16-bit
Figure 10-22. Example of Rewriting TABnCCR0 Register
Figure 10-21. Timing of Reflecting Rewritten Value
CHAPTER 10 MOTOR CONTROL FUNCTION
a
<1>
User’s Manual U18279EJ3V0UD
<2>
<1>
Note
a
<2>