DSP56303AG100 Freescale Semiconductor, DSP56303AG100 Datasheet - Page 19

• Manufacturer Part Number: DSP56303AG100
• Description: IC DSP 24BIT 100MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: DSP563xxr
• Type: Fixed Pointr

Specifications of DSP56303AG100

• Interface: Host Interface, SSI, SCI
• Clock Rate: 100MHz
• Non-volatile Memory: ROM (576 B)
• On-chip Ram: 24kB
• Voltage - I/o: 3.30V
• Voltage - Core: 3.30V
• Operating Temperature: -40°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Package: 144LQFP
• Maximum Speed: 100 MHz
• Ram Size: 24 KB
• Device Million Instructions Per Second: 100 MIPS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1.11 Timers
The DSP56303 has three identical and independent timers. Each timer can use internal or external clocking and can
either interrupt the DSP56303 after a specified number of events (clocks) or signal an external device after
counting a specific number of internal events.
Freescale Semiconductor
TIO0
TIO1
TIO2
Notes:
Signal Name
1.
2.
3.
In the Stop state, the signal maintains the last state as follows:
• If the last state is input, the signal is an ignored input.
• If the last state is output, the signal is tri-stated.
The Wait processing state does not affect the signal state.
All inputs are 5 V tolerant.
Input or Output
Input or Output
Input or Output
Type
Ignored Input
Ignored Input
Ignored Input
State During
Reset
Table 1-15.
DSP56303 Technical Data, Rev. 11
1,2
Timer 0 Schmitt-Trigger Input/Output— When Timer 0 functions as an
external event counter or in measurement mode, TIO0 is used as input. When
Timer 0 functions in watchdog, timer, or pulse modulation mode, TIO0 is used
as output.
The default mode after reset is GPIO input. TIO0 can be changed to output or
configured as a timer I/O through the Timer 0 Control/Status Register (TCSR0).
Timer 1 Schmitt-Trigger Input/Output— When Timer 1 functions as an
external event counter or in measurement mode, TIO1 is used as input. When
Timer 1 functions in watchdog, timer, or pulse modulation mode, TIO1 is used
as output.
The default mode after reset is GPIO input. TIO1 can be changed to output or
configured as a timer I/O through the Timer 1 Control/Status Register (TCSR1).
Timer 2 Schmitt-Trigger Input/Output— When Timer 2 functions as an
external event counter or in measurement mode, TIO2 is used as input. When
Timer 2 functions in watchdog, timer, or pulse modulation mode, TIO2 is used
as output.
The default mode after reset is GPIO input. TIO2 can be changed to output or
configured as a timer I/O through the Timer 2 Control/Status Register (TCSR2).
Triple Timer Signals
Signal Description
Timers
1-15