604-00030 Parallax Inc, 604-00030 Datasheet - Page 3

• Manufacturer Part Number: 604-00030
• Description: IC FLOATING-POINT COPROC V2 8DIP
• Manufacturer: Parallax Inc

Specifications of 604-00030

• Processor Type: Floating-Point Co-Processor
• Voltage: 4.75 V ~ 5.25 V
• Mounting Type: Through Hole
• Package / Case: *
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Speed: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

I
The following diagrams show the write and read data transfers. A write transfer consists of a slave address, followed
by a register address, followed by 0 to n data bytes. A read transfer is normally preceded by a write transfer to select
the register to read from.
I
The uM-FPU should be reset at the beginning of every program to ensure that the microcontroller and the uM-FPU
are synchronized. The uM-FPU is reset by writing a zero byte to I
recommended after the reset operation to ensure that the Reset is complete and the uM-FPU is ready to receive
commands.. All uM-FPU registers are reset to the special value NaN (Not a Number), which is equal to hexadecimal
value 0x7FC00000.
I
uM-FPU instructions and data are written to I
data is waiting to be transferred. If no data is waiting to be transferred the Busy/Ready status is returned. A read
operation is normally preceded by a write operation to select the I
Micromega Corporation
2
2
2
C Data Transfers
C Reset Operation
C Reading and Writing Data
Item
I
Read Delay – normal operation
Read Delay – debug enabled
2
C transfer speed
S
S - Start Condition
A - ACK/NAK
P - Stop Condition
Address
1100100
Slave
Register Address
S
S - Start Condition
A - ACK
N - NAK
P - Stop Condition
Address
1100100
Slave
0
0
1
A aaaaaaaa A dddddddd A dddddddd A
I
I
2
2
Register
Address
C Write Data Transfer
C Read Data Transfer
1
2
C register 0. Reading I
A dddddddd A dddddddd N
I
2
C Registers
Data
1 to n data bytes
3
Write
Reset
Data
Data
2
2
0 to n data bytes
C register to read from.
C register address 1. A delay of 8 milliseconds is
2
C register 0 will return the next data byte, if
Data
100
Min
50
Buffer Space
Data / Status
Read
Data
Resetting and Executing Instructions
Max
400
180
90
P
usec
usec
kHz
Unit
P
uM-FPU V2 Datasheet