Microchip Technology TSSOP20EV Data Sheet

Page of 80
© 2009 Microchip Technology Inc.
DS22233A-page 55
MCP434X/436X
7.6.2
CONTINUOUS READS 
Continuous reads allow the devices memory to be read
quickly. Continuous reads are possible to all memory
locations. If a non-volatile memory write cycle is
occurring, then Read commands may only access the
volatile memory locations.
 shows the sequence for three continuous
reads. The reads do not need to be to the same
memory address.
      
FIGURE 7-5:
Continuous Read Sequence.
         
A
D
3
A
D
2
A
D
1
A
D
0
1
1
X
X
X
X
X
X
X
X
X
X
1
1
1
1
1
1
1* D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
A
D
3
A
D
2
A
D
1
A
D
0
1
1
X
X
X
X
X
X
X
X
X
X
1
1
1
1
1
1
1* D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
A
D
3
A
D
2
A
D
1
A
D
0
1
1
X
X
X
X
X
X
X
X
X
X
1
1
1
1
1
1
1* D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
COMMAND BYTE
DATA BYTE
SDI
SDO
Note 1: If a Command Error (CMDERR) occurs at this bit location (*), then all following SDO bits will be
driven low until the CS pin is driven inactive (V
IH
).