20-668-0024 Rabbit Semiconductor, 20-668-0024 Datasheet - Page 251

• Manufacturer Part Number: 20-668-0024
• Description: IC CPU RABBIT4000 128-LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0024

• Processor Type: Rabbit 4000 8-bit
• Speed: 60MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Other names: 20-668-0022; 316-1078

pointer register is initialized to 0x88 (the first PWM register) and the DMA then transfers
blocks of eight bytes to completely reprogram the PWM.
When the DMA destination address is the PWBAR, the DMA request from the PWM is
automatically connected to the DMA.
23.1.1 Block Diagram
23.1.2 Registers
Chapter 23 Pulse Width Modulator
PWM LSB 0 Register
PWM MSB 0 Register
PWM LSB 1 Register
PWM MSB 1 Register
PWM LSB 2 Register
PWM MSB 2 Register
PWM LSB 3 Register
PWM MSB 3 Register
PWM Block Access Register
PWM Block Pointer Register
0x88 -> 0x89 -> 0x8A -> 0x8B -> 0x8C -> 0x8D -> 0x8E -> 0x8F ->
Register Name
Mnemonic
PWM0R
PWM1R
PWM2R
PWM3R
PWBAR
PWBPR
PWL0R
PWL1R
PWL2R
PWL3R
I/O Address
0x008A
0x008B
0x008C
0x008D
0x008E
0x00E8
0x00E9
0x0088
0x0089
0x008F
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
W
xxxxx00x
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xxxxx00x
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xxxxx00x
xxxxxxxx
xxxxx00x
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10001000
Reset
241