20-668-0003 Rabbit Semiconductor, 20-668-0003 Datasheet - Page 85

• Manufacturer Part Number: 20-668-0003
• Description: IC CPU RABBIT2000 30MHZ 100PQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0003

• Processor Type: Rabbit 2000 8-Bit
• Speed: 30MHz
• Voltage: 2.7V, 3V, 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 100-MQFP, 100-PQFP
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 30 MHz
• Operating Supply Voltage: 0 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 40
• Number Of Timers: 8 & 10 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 20-668-0003; 316-1062

Chapter 7 Miscellaneous I/O Functions
7:0
7:0
7:6
5:0
Bit(s)
Bit(s)
Table 7-7. Real-Time Clock Control Register (RTCCR adr = 0x01)
Read
Write
0x00
0x40
0x80
0xC0
01
0
1
Value
Table 7-6. Real-Time Clock RTCxR Data Registers
Value
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.
No effect on the RTC counter, disable the byte increment function,
or cancel the RTC reset command (except code 0x80)
Arm RTC for a reset with code 0x80 or reset and byte increment
function with code 0x0C0.
Resets all six bytes of the RTC counter to 0x00 if preceeded by
arm command 0x40.
Resets all six bytes of the RTC counter to 0x00 and enters byte
increment mode—precede this command with 0x40 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 0x00 cancels the byte
increment mode.
No effect on the RTC counter.
Increment the corresponding byte of the RTC counter.
Description
Description
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