SPEAR320-2 STMicroelectronics, SPEAR320-2 Datasheet - Page 49

• Manufacturer Part Number: SPEAR320-2
• Description: IC MPU ARM9 289LFBGA
• Manufacturer: STMicroelectronics
• Series: SPEAr®r

Specifications of SPEAR320-2

• Processor Type: ARM Microprocessor
• Speed: 333MHz
• Voltage: 1.14 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 289-LFBGA
• Processor Series: SPEAr320
• Core: ARM926EJ-S
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 333 MHz
• Operating Supply Voltage: 1.2 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Data Ram Size: 8 KB
• Interface Type: I2C, UART, USB, Serial
• Number Of Programmable I/os: 102
• Number Of Timers: 4
• Program Memory Size: 32 KB
• Program Memory Type: ROM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-10843

SPEAr320
7
7.1
7.1.1
Timing requirements
DDR2 timing characteristics
The characterization timing is done considering an output load of 10 pF on all the DDR
pads. The operating conditions are in worst case V = 0.90 V T
V=1.10 V T
DDR2 read cycle timings
Figure 7.
Figure 8.
Table 26.
DQ
DQS
DQS
DQ
Frequency
333 MHz
266 MHz
200 MHz
A
= 40° C.
DDR2 Read cycle waveforms
DDR2 Read cycle path
DDR2 Read cycle timings
t4
t1
Doc ID 16755 Rev 4
t3
1.24 ns
1.43 ns
1.74 ns
t4 max
t5
DLL
-495 ps
-306 ps
t5 max
4 ps
t4
A
= 125° C and in best case
t2
t5
Timing requirements
-495 ps
-306 ps
t5 max
4 ps
D
CLR
SET
Q
t4
Q
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