HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 227

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

10.1
The SuperH microcomputer has an on-chip 16-bit integrated-timer pulse unit (ITU) with five
channels of 16-bit timers.
10.1.1
ITU features are listed below:
• Can process a maximum of twelve different pulse outputs and ten different pulse inputs.
• Has ten general registers (GR), two per channel, that can be set to function independently as
• Selection of eight counter input clock sources for all channels
• All channels can be set for the following operating modes:
• Channel 2 can be set to the phase counting mode: Two-phase encoder output can be counted
• Channels 3 and 4 can be set in the following modes:
• Buffer operation: Input capture registers can be double-buffered. Output compare registers can
• High-speed access via internal 16-bit bus: The TCNT, GR, and buffer register (BR) 16-bit
output compare or input capture.
automatically.
be updated automatically.
registers can be accessed at high speed via a 16-bit bus.
Section 10 16-Bit Integrated-Timer Pulse Unit (ITU)
Internal clock: , /2, /4, /8,
External clock: TCLKA, TCLKB, TCLKC, TCLKD
Compare match waveform output: 0 output/1 output/selectable toggle output (0 output/1
Input capture function: Selectable rising edge, falling edge, or both rising and falling edges.
Counter clearing function: Counters can be cleared by a compare match or input capture.
Synchronizing mode: Two or more timer counters (TCNT) can be written to
PWM mode: PWM output can be provided with any duty cycle. When combined with the
Reset-synchronized PWM mode: By combining channels 3 and 4, 3-phase PWM output is
Complementary PWM mode: By combining channels 3 and 4, 3-phase PWM output is
output for channel 2).
simultaneously. Two or more timer counters can be simultaneously cleared by a compare
match or input capture. Counter synchronization functions enable synchronized
input/output.
counter synchronizing function, enables up to five-phase PWM output.
possible with positive and negative waveforms .
possible with non-overlapping positive and negative waveforms.
Overview
Features
HITACHI 213