XPC850ZT50B Freescale Semiconductor, XPC850ZT50B Datasheet - Page 36

• Manufacturer Part Number: XPC850ZT50B
• Manufacturer: Freescale Semiconductor

Specifications of XPC850ZT50B

• Family Name: MPC8xx
• Device Core: PowerQUICC
• Device Core Size: 32b
• Frequency (max): 50MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 3.3V
• Operating Supply Voltage (max): 3.465V
• Operating Supply Voltage (min): 3.135V
• Operating Temp Range: 0C to 95C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 256
• Package Type: BGA
• Lead Free Status / Rohs Status: Not Compliant

Layout Practices
1
Figure 6-24 provides the PCMCIA access cycle timing for the external bus read.
36
Num
PSST = 1. Otherwise add PSST times cycle time.
PSHT = 0. Otherwise add PSHT times cycle time.
These synchronous timings define when the WAIT_B signal is detected in order to freeze (or relieve) the PCMCIA
current cycle. The WAIT_B assertion will be effective only if it is detected 2 cycles before the PSL timer expiration.
See PCMCIA Interface in the MPC850 PowerQUICC User’s Manual.
CLKOUT to ALE negate time
PCWE, IOWR negated to D[0–31]
invalid.
WAIT_B valid to CLKOUT rising edge.
CLKOUT rising edge to WAIT_B invalid.
Figure 6-24. PCMCIA Access Cycles Timing External Bus Read
1
Characteristic
Freescale Semiconductor, Inc.
Table 6-8. PCMCIA Timing (continued)
MPC850 (Rev. A/B/C) Hardware Specifications
For More Information On This Product,
Go to: www.freescale.com
1
1
3.00
8.00
2.00
Min
—
50MHz
13.00
Max
—
—
—
6.00
8.00
2.00
Min
—
66MHz
16.00
Max
—
—
—
4.00
8.00
2.00
Min
—
80 MHz
14.00
Max
—
—
—
FFACTOR Unit
0.250
0.250
MOTOROLA
—
—
ns
ns
ns
ns