M30622SAFP#U5 Renesas Electronics America, M30622SAFP#U5 Datasheet - Page 367

• Manufacturer Part Number: M30622SAFP#U5
• Description: IC M16C MPU ROMLESS 100QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/60r

Specifications of M30622SAFP#U5

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 50
• Program Memory Type: ROMless
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-QFP
• For Use With: 867-1000 - KIT QUICK START RENESAS 62PM3062PT3-CPE-3 - EMULATOR COMPACT M16C/62P/30P
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Timer B
2-48
Operation
Note
Figure 2.3.10. Operation timing of pulse width measurement mode
2.3.5 Operation of Timer B (pulse width measurement mode)
In pulse period/pulse width measurement mode, choose functions from those listed in Table 2.3.4. Op-
erations of the circled items are described below. Figure 2.3.10 shows the operation timing, and Figure
2.3.11 shows the set-up procedure.
Count source
Measurement pulse
Reload register
transfer timing
Timing at which counter
reaches “0000
Count start flag
Timer Bi overflow flag
Timer Bi interrupt request bit
Table 2.3.4. Choosed functions
(1) Setting the count start flag to “1” causes the counter to start counting the count source.
(2) If an effective edge of a pulse to be measured is input, the value of the counter goes to
(3) If an effective edge of a pulse to be measured is input again, the value of the counter is
• The timer Bi interrupt request bit goes to “1” when an effective edge of a pulse to be measured
• The value of the counter at the beginning of a count is indeterminate. Therefore, the timer Bi
• The timer Bi overflow flag is indeterminate after reset. The timer Bi overflow flag goes to “0” if
Count source
Measurement
mode
is input or timer Bi is overflows. The factor of interrupt request can be determined by use of the
timer Bi overflow flag within the interrupt routine.
overflow flag may go to “1” and timer Bi interrupt request may be generated during the interval
between a count start and an effective edge input.
timer Bi mode register is written to when the count start flag is “1”. This flag cannot be set to “1”
by software.
16”
“0000
to the reload register. The timer Bi interrupt request does not generate.
transferred to the reload register, and the timer Bi interrupt request bit goes to “1”. Then the
value of the counter becomes “0000
Item
counter
16
”, and measurement is started. In this instance, an indeterminate value is transferred
O
O
“H”
“1”
“0”
“1”
“0”
“1”
“0”
“L”
Internal count source (f
Pulse period measurement (interval between measurement pulse falling edge to falling edge)
Pulse period measurement (interval between measurement pulse rising edge to rising edge)
Pulse width measurement (interval between measurement pulse falling edge to rising edge,
Transfer
(indeterminate
value)
(1) Start count
Note 1: Counter is initialized at completion of measurement.
Note 2: Timer has overflowed.
Cleared to “0” when interrupt request is accepted, or cleared by software
(2) Start measurement
1
(Note 1)
/ f
8
and between rising edge to falling edge)
/ f
16
32
(3) Start measurement again
”, and measurement is started again.
/ fc
Transfer(measured value)
32
(Note 1)
)
Set-up
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(Note 1)
(Note 1)
M16C / 62A Group
Mitsubishi microcomputers
(Note 2)