20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 288

• 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

B.1.9 New Opcodes
Eight new opcodes were added to the Rabbit 3000A. UMA and UMS allow multiply-and-
add and multiply-and-subtract operations on large integers, and were added to speed up
common cryptographic math used in public-key calculations. The remaining six expand
the block copy operations available, especially to and from I/O addresses (internal and
external). These opcodes are listed in Table B-6.
B.1.9.1 New UMA/UMS Opcodes
The new
where HL, IX, and IY increment after each byte, repeated BC times. This fundamental
operation allows the addition or subtraction of two arbitrarily-long unsigned integers after
one is scaled by a single-byte value. This operation is common in many cryptographic
operations.
278
UMA
UMS
LDDSR
LDISR
LSDR
LSIR
LSDDR
LSIDR
Instruction Bytes
{CY:DE':(HL)} = (IX) ± [(IY) * DE + DE' + CY];
UMA
and
2
2
2
2
2
2
2
2
UMS
8+8i
8+8i
6+7i
6+7i
6+7i
6+7i
6+7i
6+7i
clk
opcodes perform the following operation:
Table B-6. New Rabbit 3000 Opcodes
A I S Z V C
d -
d -
-
-
s
s
s
s
-
-
-
-
-
-
-
-
- * -
- * -
- * -
- * -
- * -
- * -
- *
- *
{CY:DE':(HL) = (IX) + [(IY) * DE + DE' + CY];
BC = BC-1; IX = IX+1; IY = IY+1; HL = HL+1;
repeat while BC !=0
{CY:DE:(HL) = (IX) - [(IY) * DE + DE' + CY];
BC = BC-1; IX = IX+1; IY = IY+1; HL = HL+1;
repeat while BC !=0
(DE) = (HL); BC = BC - 1; HL = HL - 1;
repeat while BC != 0
(DE) = (HL); BC = BC - 1; HL = HL + 1;
repeat while BC != 0
(DE) = (HL); BC = BC - 1; DE = DE - 1;
HL = HL - 1; repeat while BC != 0
(DE) = (HL); BC = BC - 1; DE = DE + 1;
HL = HL + 1; repeat while BC != 0
(DE) = (HL); BC = BC - 1; DE = DE - 1;
repeat while BC != 0
(DE) = (HL); BC = BC - 1; DE = DE + 1;
repeat while BC != 0
Rabbit 3000 Microprocessor User’s Manual
Operation