BLUENRG-MS datasheet(33/42 Pages) STMICROELECTRONICS

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BlueNRG-MS

Electrical specification

Table 17: N-fractional frequency synthesizer characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

PN SYNTH

RF carrier phase

noise

At ±1 MHz offset from carrier

-113

dBc/Hz

At ±3 MHz offset from carrier

-119

dBc/Hz

LOCK TIME

PLL lock time

µs

TO TIME

PLL turn on / hop

time

Including calibration

150

µs

10.10

Auxiliary blocks characteristics

Characteristics measured over recommended operating conditions unless otherwise

specified. Typical value are referred to T A= 25 °C, V BAT=3.0 V, f c= 2440 MHz. QFN32

package version.

Table 18: Auxiliary blocks characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Battery indicator and brown-out reset (BOR) (1)

V BLT1

Battery level thresholds 1

2.7

V BLT2

Battery level thresholds 2

2.5

V BLT3

Battery level thresholds 3

2.3

V BLT4

Battery level thresholds 4

2.1

A BLT

Battery level thresholds accuracy

V ABOR

Ascending brown-out threshold

1.79

V DBOR

Descending brown-out threshold

1.73

Notes:

(1)BOR is disabled by default and it can be enabled by software.

10.11

SPI characteristics

Table 19: SPI characteristics

Symbol

Parameter

Min

Typ

Max

Unit

f CLK

1/t (CLK)

SPI clock frequency

MHz

DuCy (CLK)

SPI clock duty cycle

t s(CS)

CS setup time

t lh(CS)

CS low hold time

t hh(CS)

CS high hold time

10t (CLK)

t s(SI)

MOSI setup time

t h(SI)

MOSI hold time

t v(SO)

MISO valid time

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