Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
1173
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
44.12.6 SMC Timings
Timings are given in the following domain:
1.8V domain: VDDIO from 1.65V to 1.95V, maximum external capacitor = 30 pF
3.3V domain: VDDIO from 2.85V to 3.6V, maximum external capacitor = 50 pF
.
Timings are given assuming a capacitance load on data, control and address pads:
In the following tables t
In the following tables t
CPMCK
is MCK period. Timing extraction
44.12.6.1Read Timings
Table 44-65.
SMC Read Signals - NRD Controlled (READ_MODE = 1)
Symbol
Parameter
Min
Max
Units
VDDIO Supply
1.8V
3.3V
1.8V
3.3V
NO HOLD Settings (NRD Hold = 0)
SMC
1
Data Setup before NRD High
24.5
21.3
—
—
ns
SMC
2
Data Hold after NRD High
0
0
—
—
ns
HOLD Settings (NRD Hold
≠ 0)
SMC
3
Data Setup before NRD High
19.5
14.0
—
—
ns
SMC
4
Data Hold after NRD High
0
0
—
—
ns
HOLD or NO HOLD Settings (NRD Hold
≠ 0, NRD Hold = 0)
SMC
5
A0 - A22 Valid before NRD High
(NRD setup +
NRD pulse) *
t
CPMCK
- 6.5
(NRD setup +
NRD pulse)*
t
CPMCK
- 6.3
—
—
ns
SMC
6
NCS Low before NRD High
(NRD setup +
NRD pulse -
NCS rd setup)
* t
CPMCK
- 4.5
(NRD setup +
NRD pulse -
NCS rd setup)
* t
CPMCK
- 5.1
—
—
ns
SMC
7
NRD Pulse Width
NRD pulse *
t
CPMCK
- 7.2
NRD pulse *
t
CPMCK
- 6.2
—
—
ns