at89c5131 ATMEL Corporation, at89c5131 Datasheet - Page 164

• Manufacturer Part Number: at89c5131
• Description: 8-bit Flash Microcontroller With Full Speed Usb Device At89c5131
• Manufacturer: ATMEL Corporation

External Data Memory Read Cycle
Serial Port Timing - Shift
Register Mode
162
AT89C5131
PORT 0
PORT 2
ALE
PSEN
RD
OR SFR-P2
ADDRESS
Table 118. Symbol Description (F = 40 MHz)
Table 119. AC Parameters for a Fix Clock (F = 40 MHz)
Table 120. AC Parameters for a Variable Clock
Symbol
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
XLXL
A0-A7
Symbol
T
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
XLXL
LLAX
T
AVWL
T
LLWL
Symbol
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
XLXL
T
AVDV
Type
T
Max
Min
Min
Min
Min
LLDV
ADDRESS A8-A15 OR SFR P2
T
RLAZ
Standard
Min
10 T - x
10 T - x
300
200
Clock
2 T - x
30
0
12 T
x
T
RLRH
Parameter
Serial port clock cycle time
Output data set-up to clock rising edge
Output data hold after clock rising edge
Input data hold after clock rising edge
Clock rising edge to input data valid
X2 Clock
5 T - x
5 T- x
DATA IN
T - x
6 T
x
Max
117
T
T
WHLH
RHDX
for -M Range
X Parameter
133
T
50
20
0
RHDZ
Units
4136C–USB–04/05
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns