MC9328MX1CVM15 Freescale, MC9328MX1CVM15 Datasheet - Page 35

• Manufacturer Part Number: MC9328MX1CVM15
• Manufacturer: Freescale

Specifications of MC9328MX1CVM15

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

4.4.3
The External Interface Module (EIM) is the interface to devices external to the i.MX1, including
generation of chip-selects for external peripherals and memory. The timing diagram for the EIM is shown
in
Freescale Semiconductor
Note:
1. T is the system clock period. (For 96 MHz system clock, T=10.42 ns)
2. CS5 assertion can be controlled by CSA bits. EB assertion also can be programmable by WEA bits in CS5L register.
3. Address becomes valid and RW asserts at the start of write access cycle.
4.The external wait input requirement is eliminated when CS5 is programmed to use internal wait state.
Figure
Number
10
11
12
13
1
2
3
4
5
6
7
8
9
Table 16. WAIT Write Cycle DMA Enabled: WSC = 111111, DTACK_SEL=1, HCLK=96MHz
5, and
EIM External Bus Timing
EB assertion time
CS5 pulse width
RW negated before CS5 is negated
Address inactived after CS negated
Wait asserted after CS5 asserted
Wait asserted to RW negated
Data hold timing after RW negated
Data ready after CS5 is asserted
CS deactive to next CS active
EB negate after CS negate
Wait becomes low after CS5 asserted
Wait pulse width
CS5 assertion time
Table 12
Characteristic
defines the parameters of signals.
MC9328MX1 Technical Data, Rev. 7
See note 2
See note 2
1.5T+0.74
Minimum
2.5T-0.29
T+2.15
24.87
3T
1T
–
–
–
T
0
Functional Description and Application Information
3.0 ± 0.3 V
Maximum
2.5T+0.68
1.5T+2.35
2T+7.34
1020T
1019T
1020T
0.93
T
–
–
–
–
–
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
35