ADUC7025_15 Datasheet, PDF (14/104 Pages) Analog Devices – Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI MCU

ADuC7019/20/21/22/24/25/26/27/28/29
Table 3. External Memory Read Cycle
Parameter
Min
CLK¹
1/MD clock
tMS_AFTER_CLKH
4
tADDR_AFTER_CLKH
4
tAE_H_AFTER_MS
tAE
tHOLD_ADDR_AFTER_AE_L
tRD_L_AFTER_AE_L
tRD_H_AFTER_CLKH
0
tRD
tDATA_BEFORE_RD_H
16
tDATA_AFTER_RD_H
8
tRELEASE_MS_AFTER_RD_H
1 _{See Table 78.}
Typ
ns typ × (POWCON[2:0] + 1)
½ CLK
(XMxPAR[14:12] + 1) × CLK
½ CLK + (! XMxPAR[10] ) × CLK
½ CLK + (! XMxPAR[10]+ ! XMxPAR[9] ) × CLK
(XMxPAR[3:0] + 1) × CLK
+ (! XMxPAR[9]) × CLK
1 × CLK
ECLK
MSx
AE
WS
RS
CLK
t_{MS_AFTER_CLKH}
t_{AE_H_AFTER_MS}
t_AE
t_{RD_L_AFTER_AE_L}
t_RD
t_{RD_H_AFTER_CLKH}
t_{ADDR_AFTER_CLKH}
t_{DATA_BEFORE_RD_H}
t_{DATA_AFTER_RD_H}
AD[16:1] FFFF
2348
XXXX CDEF XX
234A
XX
t_{HOLD_ADDR_AFTER_AE_L}
BHE
BLE
A16
Figure 13. External Memory Read Cycle (See Table 78)
Data Sheet
Max
Unit
8
ns
16
ns
4
ns
t_{RELEASE_MS_AFTER_RD_H}
89AB
Rev. F | Page 14 of 104