AT86RF231
12.3
Digital Pin Characteristics
.Test Conditions: T OP = 25°C (unless otherwise stated)
Table 12-3.
Digital Pin Characteristics
No.
Symbol
Parameter
Condition
Min.
Typ.
Max
Units
High level input voltage
12.3.1
12.3.2
V IH
V IL
(1)
Low level input voltage (1)
V DD - 0.4
0.4
V
V
12.3.3
V OH
High level output voltage
(1)
For all output driver strengths defined
V DD - 0.4
V
in TRX_CTRL_0
12.3.4
V OL
Low level output voltage (1)
For all output driver strengths defined
0.4
V
in TRX_CTRL_0
Note:
12.4
1. The capacitive load should not be larger than 50 pF for all I/Os when using the default driver strength settings, refer to Sec-
tion 1.3.1 “Driver Strength Settings” on page 7 . Generally, large load capacitances increase the overall current consumption.
Digital Interface Timing Characteristics
Test Conditions: T OP = 25°C, V DD = 3.0V, C L = 50 pF (unless otherwise stated).
Table 12-4.
Digital Interface Timing Characteristics
No.
12.4.1
12.4.2
Symbol
f sync
f async
Parameter
SCLK frequency
SCLK frequency
Condition
synchronous operation
asynchronous operation
Min.
Typ.
Max
8
7.5
Units
MHz
MHz
12.4.3
t 1
/SEL low to MISO active
180
ns
250
12.4.4
12.4.5
12.4.6
12.4.7
12.4.8
t 2
t 3
t 4
t 5
t 6
SCLK to MISO out
MOSI setup time
MOSI hold time
LSB last byte to MSB next byte
/SEL high to MISO tri state
data hold time
10
10
10
(2)
10
ns
ns
ns
ns
ns
12.4.9
12.4.10
t 7
t 8
SLP_TR pulse width
SPI idle time
TX start trigger
SPI read/write, standard SRAM
62.5
250
Note (1)
ns
ns
(SEL rising to falling edge)
and Frame Buffer access modes,
Idle time between consecutive SPI
accesses
12.4.11
t 8
SPI idle time
SPI Fast SRAM read/write access
500
ns
(SEL rising to falling edge)
mode, refer to Section 11.1.5 ,
Idle time between consecutive SPI
accesses
12.4.12
t 9
Last SCLK to /SEL high
250
ns
12.4.13
12.4.14
12.4.15
t 10
t 11
t 12
Reset pulse width
SPI access latency after reset
AES core cycle time
10 clock cycles at 16 MHz
10 clock cycles at 16 MHz
625
625
24
ns
ns
μs
157
8111C–MCU Wireless–09/09
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