DSPIC30F3010-20I/SP Microchip Technology, DSPIC30F3010-20I/SP Datasheet - Page 74

• Manufacturer Part Number: DSPIC30F3010-20I/SP
• Description: IC DSPIC MCU/DSP 24K 28DIP
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F3010-20I/SP

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, Motor Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 24KB (8K x 24)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Core Frequency: 40MHz
• Core Supply Voltage: 5.5V
• Embedded Interface Type: I2C, SPI, UART
• No. Of I/o's: 20
• Flash Memory Size: 24KB
• Supply Voltage Range: 2.5V To 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DSPIC30F301020ISP

dsPIC30F3010/3011
10.1
The 32-bit timer can be placed in the Gated Time
Accumulation mode. This mode allows the internal T
to increment the respective timer when the gate input
signal (T2CK pin) is asserted high. Control bit, TGATE
(T2CON<6>), must be set to enable this mode. When
in this mode, Timer2 is the originating clock source.
The TGATE setting is ignored for Timer3. The timer
must be enabled (TON = 1) and the timer clock source
set to internal (TCS = 0).
The falling edge of the external signal terminates the
count operation, but does not reset the timer. The user
must reset the timer in order to start counting from zero.
10.2
When a match occurs between the 32-bit timer (TMR3/
TMR2) and the 32-bit combined Period register (PR3/
PR2), a special ADC trigger event signal is generated
by Timer3.
10.3
The input clock (F
has a prescale option of 1:1, 1:8, 1:64 and 1:256,
selected by control bits, TCKPS<1:0> (T2CON<5:4>
and T3CON<5:4>). For the 32-bit timer operation, the
originating clock source is Timer2. The prescaler
operation for Timer3 is not applicable in this mode. The
prescaler counter is cleared when any of the following
occurs:
• A write to the TMR2/TMR3 register
• Clearing either of the TON (T2CON<15> or
• A device Reset such as a POR and BOR
However, if the timer is disabled (TON = 0), the Timer2
prescaler cannot be reset, since the prescaler clock is
halted.
TMR2/TMR3 is not cleared when T2CON/T3CON is
written.
DS70141F-page 74
T3CON<15>) bits to ‘0’
Timer Gate Operation
ADC Event Trigger
Timer Prescaler
OSC
/4 or external clock) to the timer
CY
10.4
During CPU Sleep mode, the timer will not operate,
because the internal clocks are disabled.
10.5
The 32-bit timer module can generate an interrupt-on-
period match, or on the falling edge of the external gate
signal. When the 32-bit timer count matches the
respective 32-bit Period register, or the falling edge of
the external “gate” signal is detected, the T3IF bit
(IFS0<7>) is asserted and an interrupt will be gener-
ated if enabled. In this mode, the T3IF interrupt flag is
used as the source of the interrupt. The T3IF bit must
be cleared in software.
Enabling an interrupt is accomplished via the
respective Timer Interrupt Enable bit, T3IE (IEC0<7>).
Timer Operation During Sleep
Mode
Timer Interrupt
© 2010 Microchip Technology Inc.