STLC5465B STMicroelectronics, STLC5465B Datasheet - Page 50

• Manufacturer Part Number: STLC5465B
• Description: Telecom ICs Multi-HDLC Sw Matrix
• Manufacturer: STMicroelectronics
• Type: Telecom IC - Variousr

Specifications of STLC5465B

• Operating Supply Voltage: 4.75 V to 5.25 V
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: PQFP-160
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STLC5465B
VI - MEMORY TIMING (continued)
Figure 39 : Dynamic Memory Write Signals from the Multi-HDLC
Note : Total Cycle : Tu + Tv + Tw + Tz
50/101
Symbol
Tv/2
Tw
Tu
Td
Tv
Tz
f
f : Masterclock Frequency
Delay between beginning of cycle and NRAS Falling Edge
Delay between NRAS Falling Edge and NCAS Falling Edge
Delay between NCAS Falling Edge and NWE Rising Edge
Delay between NWE Rising Edge and end of cycle
Delay between NRAS Falling Edge and address change
Data Valid after beginning of cycle (30 pF)
NDS fro m P
(or equivalent)
MASTE RCLOCK
a pplied to XTAL1 P in
NRAS0/3
NCAS0/1
NWE
ADM0/10
DM0/15
NOE
No te : S e e
MBL Definition
HZ
HZ
T
a
Parameter
Td
impe dance outside this time if MBL = 0
Tu
Ea ch s ignal from the MHDLC is high
a
Tv/2
Tota l Write Cycle
Tv
a
Tw
a
Tz
a
Min.
1/2f
32
1/f
1/f
1/f
1/f
1/f
a
HZ
HZ
Typ.
1/f
Max.
33
2/f
2/f
2/f
2/f
1/f
1/f
Unit
MHz
ns
ns
ns
ns
ns
ns