MB87P2020 Datasheet, PDF (279/356 Pages) Fujitsu Component Limited. – Colour LCD/CRT/TV Controller

AC Characteristics
Table 2-7: ULB Input Signal Timing Specification
Parameter
Symbol
Min [ps]
Max [ps]
Jas
Lav
Jas
Lav
Read (ULB_RDX) Setup Time
t_SRDX
980
5020 -
Read (ULB_RDX) Hold Time
t_HRDX
1890 2620 -
Write (ULB_WRX) Setup Time
t_SWRX
5820 7890 -
Write (ULB_WRX) Hold Time
t_HWRX
1700 3850 -
Address (ULB_A) Setup Time^b
t_SA
2600 2410 -
Address (ULB_A) Hold Time
t_HA
1910 3610 -
Input Data (ULB_D) Setup Time
t_SDI
5200 1070 -
Input Data (ULB_D) Hold Time
t_HDI
2130 3750 -
Access Time
t_ACC
1 T_{ULB_CLK}
variable^c
External Reaction Time on ULB_RDY
t_EXR
0 T_{ULB_CLK}
-
a. More restrictive specification to rising edge of CLK_ULB is only needed if SPB will be used.
b. Address setup timing related to falling edge.
c. Access time varies with whole number of ULB_CLK periods for different register addresses. Required tim-
ing is controlled with ULB_RDY handshake.
Table 2-8: ULB Timing Specification, Output Characteristics
Parameter
Symbol
max. Ready (ULB_RDY) Output Delay Time t_ODRDY
min. Ready (ULB_RDY) Output Hold Time t_OHRDY
max. Output Data (ULB_D) Delay Time
(regard. CLK)
t_ODD
min. Output Data (ULB_D) Hold Time
(regard. CLK)
t_OHD
max. Output Data (ULB_D) Delay Time
(regard. RDX)
t_ODDRDX
min. Output Data (ULB_D) Hold Time
(regard. RDX)
t_OHDRDX
@20pF [ps]
Jas
Lav
13960 13070
4550 4560
17980 21160
2640 3980
12010 16490
2450 3560
@50pF [ps]
Jas
Lav
15690 15110
4660 5190
20060 23230
2640 4120
14120 18560
3120 3750
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