at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 183
at91sam9g20-cu
Manufacturer Part Number
at91sam9g20-cu
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9G20-CU.pdf
(814 pages)
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Figure 21-28. Read Access with NWAIT Assertion in Frozen Mode (EXNW_MODE = 10)
6384B–ATARM–15-Dec-08
internally synchronized
NWAIT signal
NBS0, NBS1,
NBS2, NBS3,
A0,A1
A
NWAIT
[25:2]
MCK
NCS
NRD
1
4
3
0
2
5
Read cycle
EXNW_MODE = 10 (Frozen)
READ_MODE = 0 (NCS_controlled)
NRD_PULSE = 2, NRD_HOLD = 6
NCS_RD_PULSE =5, NCS_RD_HOLD =3
FROZEN STATE
2
5
5
2
AT91SAM9G20 Preliminary
1
4
0
3
Assertion is ignored
2
2
1
1
0
0
183
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