参数资料
型号: IDT88P8344BHGI
厂商: IDT, Integrated Device Technology Inc
文件页数: 84/98页
文件大小: 0K
描述: IC SPI3-SPI4 EXCHANGE 820-PBGA
标准包装: 24
系列: *
其它名称: 88P8344BHGI
85
IDT88P8344 SPI EXCHANGE 4 x SPI-3 TO SPI-4
INDUSTRIALTEMPERATURERANGE
APRIL 10, 2006
Figure 37. Microprocessor parallel port Motorola read timing diagram
6370 drw07
Valid Address
READ DBUS[7:0]
Valid Data
tRecovery
ADD[5:0]
R/WB
DSB + CSB
tDW
tRC
tRWH
tRWV
tAV
tADH
tPRD
tDAZ
11.6.6.1 Microprocessor parallel port AC timing
specifications
BesuretoconnectSPI_ENtoalogiclowwhenusingtheparallelPinterface
mode.
Read cycle specification Motorola non-multiplexed (MPM=0)
Symbol
Parameter
MIN
MAX
Unit
T
Internal main clock period (MCLK)
80
100
MHz
tRC
Read cycle time
5.5T+25
ns
tDW
Valid DSB width
5.5T+20
ns
tRWV
Delay from DSB to valid read signal
T/2-4
ns
tRWH
R/WB to DSB hold time
2T+10
ns
tAV
Delay from DSB to Valid Address
T/2-4
ns
tADH
Address to DSB hold time
2T+10
ns
tRPD
DSB to valid read data propagation delay
5.5T+20
ns
tDAZ
Delay from read data active to high Z
12
ns
tRecovery Recovery time from read cycle
5
ns
TABLE 138 – MICROPROCESSOR PARALLEL PORT MOTOROLA READ TIMING
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