20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 45

• 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

Chapter 4 System Management
Bit(s)
Bit(s)
7:0
7:6
5:0
7:0
Real-Time Clock Control Register
Real-Time Clock x Register
0x00C0
0x0000
0x0040
0x0080
Value
Value
Write
Read
01
0
1
Writing a 0x0000 to the RTCCR has no effect on the RTC counter. However,
depending on what the previous command was, writing a 0x0000 may either
1. disable the byte increment function or
2. cancel the RTC reset command
If the 0x00C0 command is followed by a 0x0000 command, only the byte
increment function will be disabled. The RTC reset will still take place.
Arm RTC for a reset with code 0x0080 or reset and byte increment function with
code 0x00C0.
Resets all six bytes of the RTC counter to 0x0000 if preceeded by arm command
0x0040.
Resets all six bytes of the RTC counter to 0x0000 and enters byte increment
mode—precede this command with 0x0040 arm command.
This bit combination must be used with every byte increment write to increment
clock(s) register corresponding to bit(s) set to "1". Example: 01001101
increments registers: 0, 2,3. The byte increment mode must be enabled. Storing
0x0000 cancels the byte increment mode.
No effect on the real-time clock counter.
Increment the corresponding byte of the real-time clock counter.
The current value of the 48-bit RTC holding register is returned.
Writing to the RTC0R transfers the current count of the RTC to six holding
registers while the RTC continues counting.
(RTCCR)
(RTC0R)
(RTC1R)
(RTC2R)
(RTC3R)
(RTC4R)
(RTC5R)
Description
Description
(Address = 0x0001)
(Address = 0x0002)
(Address = 0x0003)
(Address = 0x0004)
(Address = 0x0005)
(Address = 0x0006)
(Address = 0x0007)
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