EP7309-CR Cirrus Logic Inc, EP7309-CR Datasheet - Page 17
![32-Bit Microcontroller IC](/photos/19/5/190595/4243180_sml.jpg)
EP7309-CR
Manufacturer Part Number
EP7309-CR
Description
32-Bit Microcontroller IC
Manufacturer
Cirrus Logic Inc
Specifications of EP7309-CR
Controller Family/series
(ARM7)
Core Size
32 Bit
No. Of Timers 8/12/16/32 Bits
0 / 0 / 2 / 0
Interface
SSI, UART
Embedded Interface Type
SSI, UART
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EP7309-CR
Manufacturer:
AGERE
Quantity:
3 120
Part Number:
EP7309-CR
Manufacturer:
CIRRUSLOGIC
Quantity:
20 000
Static Memory Single Write Cycle
DS507F1
E X P R D Y
E X P C L K
W R IT E
W O R D
W O R D
n M W E
H A L F -
n M O E
n C S
A
D
Note:
1. The cycle time can be extended by integer multiples of the clock period (22 ns at 45 MHz, 27 ns at 36 MHz, 54 ns at
18.432 MHz, and 77 ns at 13 MHz), by either driving EXPRDY low and/or by programming a number of wait states. EXPRDY is
sampled on the falling edge of EXPCLK before the data transfer. If low at this point, the transfer is delayed by one clock period
where EXPRDY is sampled again. EXPCLK need not be referenced when driving EXPRDY, but is shown for clarity.
2. Zero wait states for sequential writes is not permitted for memory devices which use nMWE pin, as this cannot be driven with
3. Address, Data, Halfword, Word, and Write hold state until next cycle.
valid timing under zero wait state conditions.
t
t
H W d
W D d
Figure 4. Static Memory Single Write Cycle Timing Measurement
t
t
t
EXs
C Sd
Ad
t
M W d
t
D v
©
Copyright Cirrus Logic, Inc. 2005
(All Rights Reserved)
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EXh
t
M W h
High-Performance, Low-Power System on Chip
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C Sh
EP7309
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