20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 200

• Manufacturer Part Number: 20-668-0011
• Description: IC MPU RABIT3000A 55.5MHZ128LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0011

• Processor Type: Rabbit 3000 8-Bit
• Speed: 55.5MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 55.5 MHz
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 55 C
• Number Of Programmable I/os: 56
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 316-1061

22.4 Register Descriptions
190
Bit(s)
Bit(s)
Bit(s)
* Bits 5:1 are ignored in the original Rabbit 3000 microprocessor.
5:4
2:1
7:6
7:0
7:0
3
0
*
Timer A Time Constant 9 Register
*
*
PWM MSB x Register
PWM LSB x Register
Value
Value
Value
Write
Write
00
01
10
11
00
01
10
11
0
1
The least significant two bits for the Pulse Width Modulator count are stored.
Normal PWM operation.
Suppress PWM output seven out of eight iterations of PWM counter.
Suppress PWM output three out of four iterations of PWM counter.
Suppress PWM output one out of two iterations of PWM counter.
This bit is ignored and should be written with zero.
Pulse Width Modulator interrupts are disabled.
Pulse Width Modulator interrupts use Interrupt Priority 1.
Pulse Width Modulator interrupts use Interrupt Priority 2.
Pulse Width Modulator interrupts use Interrupt Priority 3.
PWM output High for single block.
Spread PWM output throughout the cycle.
Most significant eight bits for the Pulse Width Modulator count. With a count of
“n”, the PWM output will be High for “n + 1” clocks out of the 1024 clocks of
the PWM counter.
Time constant for the Timer A counter. This time constant will take effect the
next time that the Timer A counter counts down to zero. The timer counts
modulo n + 1, where n is the programmed time constant.
(PWM0R)
(PWM1R)
(PWM2R)
(PWM3R)
(PWL0R)
(PWL1R)
(PWL2R)
(PWL3R)
(TAT9R)
Description
Description
Description
Rabbit 3000 Microprocessor User’s Manual
(Address = 0x008A)
(Address = 0x008C)
(Address = 0x008E)
(Address = 0x008B)
(Address = 0x008D)
(Address = 0x00A8)
(Address = 0x0088)
(Address = 0x0089)
(Address = 0x008F)