EP7312-IV-90 Cirrus Logic Inc, EP7312-IV-90 Datasheet - Page 22
![IC ARM720T MCU 90MHZ 208-LQFP](/photos/12/44/124403/ep7312-iv-90_sml.jpg)
EP7312-IV-90
Manufacturer Part Number
EP7312-IV-90
Description
IC ARM720T MCU 90MHZ 208-LQFP
Manufacturer
Cirrus Logic Inc
Series
EP7r
Datasheet
1.EP7312-CVZ.pdf
(64 pages)
Specifications of EP7312-IV-90
Core Processor
ARM7
Core Size
32-Bit
Speed
90MHz
Connectivity
Codec, DAI, EBI/EMI, IrDA, Keypad, SPI/Microwire1, UART/USART
Peripherals
LCD, LED, MaverickKey, PWM
Number Of I /o
27
Program Memory Type
ROMless
Ram Size
56K x 8
Voltage - Supply (vcc/vdd)
2.3 V ~ 2.7 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
208-LQFP
For Use With
598-1209 - KIT DEVELOPMENT EP73XX ARM7
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Other names
598-1246
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EP7312-IV-90
Manufacturer:
Cirrus Logic Inc
Quantity:
10 000
EP7312
High-Performance, Low-Power System on Chip
Static Memory Single Read Cycle
22
EXPRDY
EXPCLK
WRITE
WORD
WORD
nMWE
HALF-
nMOE
nCS
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. Address, Halfword, Word, and Write hold state until next cycle.
t
WRd
t
CSd
t
Ad
t
t
HWd
WDd
Figure 7. Static Memory Single Read Cycle Timing Measurement
t
EXs
©
Copyright Cirrus Logic, Inc. 2005
t
MOEd
(All Rights Reserved)
t
Ds
t
EXh
t
t
MOEh
CSh
t
Dh
DS508F1