M30245FCGP#U1 Renesas Electronics America, M30245FCGP#U1 Datasheet - Page 252

• Manufacturer Part Number: M30245FCGP#U1
• Description: IC M16C/24 MCU FLSH 128K 100LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/20r

Specifications of M30245FCGP#U1

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, SSI, UART/USART, USB
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• Package: 100LQFP
• Family Name: R8C
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 3.3 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 82
• Interface Type: USB/UART/I2C/SPI
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

M30245 Group
Usage Notes
Rev.2.00
REJ03B0005-0200
Timer A
Timer mode
Event counter mode
One-shot timer mode
The value of the counter can be read, with arbitrary timing, by reading the Timer Ai register while a count is in progress.
Reading the Timer Ai register with the reload timing gets “FFFF
After setting a value in the Timer Ai register, a proper value can be read with the counter stopped before it starts counting.
The value of the counter can be read, with arbitrary timing, by reading the Timer Ai register while a count is in progress.
Reading the Timer Ai register with the reload timing gets “FFFF
After setting a value in the Timer Ai register, a proper value can be read with the counter stopped before it starts counting .
Reset the timer when counting has stopped in free run type.
If using “Free-Run type”, the timer register contents may be unknown when counting begins. Set the timer value
immediately after counting has started.
Example if the up/down count is not switched:
• Enable the “Reload” function and write to the timer register before counting begins.
• Rewrite the value to the timer register immediately after counting has started.
• If counting up, rewrite “0000
• If counting down, rewrite “FFFF
Example if the up/down count is switched:
• Use the “Reload type” operation until the first count pulse is input.
• Switch to “Free-Run type”.
Setting the count start flag to “0” while a count is in progress causes as the following:
• The counter stops counting and a content of reload register is reloaded.
• The TAi
• The interrupt request generated and the Timer Ai interrupt request bit goes to “1”.
The output from the one-shot timer synchronizes with the count source generated internally. Therefore, when an
external trigger has been selected, a delay of one cycle of count source (maximum) occurs between the trigger input to
the TAi
The Timer Ai interrupt request bit goes to “1” if the timer's operation mode is set using any of the following procedures:
• Selecting one-shot timer mode after reset.
• Changing operation mode from timer mode to one-shot timer mode.
• Changing operation mode from event counter mode to one-shot timer mode.
Therefore, to use Timer Ai interrupt (interrupt request bit), set Timer Ai interrupt request bit to “0” after the above listed
changes have been made.
If a trigger occurs while a count is in progress, after the counter performs one down count following the reoccurrence of
a trigger, the reload register contents are reloaded, and the count continues.
To generate a trigger while a count is in progress, generate the second trigger after a period longer than one cycle of the
timer's count source after the previous trigger occurred.
Oct 16, 2006
IN
OUT
pin and the one-shot timer output.
pin outputs “L” level.
page 250 of 264
16
” to the timer register.
1
” to the timer register. This will cause the same operation as “Free-Run type”.
16
”.
16
” by underflow or “0000
Usage Notes
16
” by overflow.