Z8F6421VN00ZEM Zilog, Z8F6421VN00ZEM Datasheet - Page 164
Z8F6421VN00ZEM
Manufacturer Part Number
Z8F6421VN00ZEM
Description
KIT ICE Z8 ENCORE 64K 44PLCC
Manufacturer
Zilog
Series
Z8 Encore!®r
Type
In-Circuit Emulator Systemr
Specifications of Z8F6421VN00ZEM
Contents
Emulator Board, Cables, Software and Documentation
For Use With/related Products
Z8 Encore! 44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
269-3394
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PS019921-0308
S
Slave Address
Read Transaction with a 10-Bit Address
1st 7 bits
4. The I
5. The I
6. If the I
7. The I
8. The I
9. Software responds by reading the I
10. If there are more bytes to transfer, return to
11. After the last byte is shifted in, a Not Acknowledge interrupt is generated by the I
12. Software responds by setting the STOP bit of the I
13. A STOP condition is sent to the I
Figure 32
regions indicate data transferred from the I
indicate data transferred from the slaves to the I
The first seven bits transmitted in the first byte are
most-significant bits of the 10-bit address. The lowest bit of the first byte transferred is the
write control bit.
Figure 32. Receive Data Format for a 10-Bit Addressed Slave
next high period of SCL, the I
Continue with
If the slave does not acknowledge, the Not Acknowledge interrupt occurs (NCKI bit is
set in the Status register, ACK bit is cleared). Software responds to the Not
Acknowledge interrupt by setting the STOP bit and clearing the TXI bit. The I
Controller sends the STOP condition on the bus and clears the STOP and NCKI bits.
The transaction is complete (ignore the following steps).
I
byte), else it sends an Acknowledge.
is only one more byte to receive, set the NAK bit of the I
Controller.
2
C Controller sends a Not Acknowledge to the I
W=0 A
2
2
2
2
C Controller shifts in the byte of data from the I
displays the read transaction format for a 10-bit addressed slave. The shaded
C Controller sends the START condition.
C Controller shifts the address and read bit out the SDA signal.
C Controller asserts the Receive interrupt (RDRF bit set in the Status register).
2
C slave acknowledges the address by pulling the SDA signal Low during the
Slave Address
step
2nd Byte
7.
2
C Controller sets the ACK bit in the I
A S
2
C slave, the STOP and NCKI bits are cleared.
2
C Data register which clears the RDRF bit. If there
2
Slave Address
C Controller to slaves and unshaded regions
1st 7 bits
2
step
C Controller.
11110XX
7.
2
C slave if the NAK bit is set (last
2
Z8 Encore! XP
C Control register.
2
C slave on the SDA signal. The
. The two bits
2
R=1 A Data A Data A P
C Control register.
Product Specification
2
®
C Status register.
F64XX Series
XX
I2C Controller
are the two
2
C
2
C
150
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