BelaSigna R261

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5

3.3 V supply voltage (unless noted differently). Parameters marked as screened are tested on each chip. Other parameters are qualified

for all process corners but not tested on every part.)

Parameter

Screened

Unit

Max

Typ

Min

Test Conditions / Notes

Symbol

LOW−SPEED A/D

Input voltage

LSAD_Vin

0

1

V

Sampling frequency

LSAD_SF

For each LSAD channel,

MCLK = 1.28 MHz

0.5

1.6

4

kHz

Input impedance

LSAD_RIN

100

108

kW

Offset error

LSAD_O_Err Input at VREG

−7

5

LSB

Gain error

LSAD_G_Err Input at VREG

−6

6

LSB

INL

LSAD_INL

−4

4

LSB

DNL

LSAD_DNL

−1

1.6

LSB

DIGITAL PADS (VDDO = 1.8 V)

Voltage level for Low input

VIL_1V8

−0.3

0.4

V

Voltage level for High input

VIH_1V8

1.3

1.98

V

Pull−up resistance

Rup_1V8

63

114

162

kW

Pull−down resistance

Rdn_1V8

87

153

215

kW

Rise and Fall Time

Trf_1V8

20 pF load

2

3

5

ns

DIGITAL PADS (VDDO = 3.3 V)

Voltage level for Low input

VIL_3V3

−0.3

0.8

V

Voltage level for High input

VIH_3V3

1.8

3.6

V

Pull−up resistance

Rup_3V3

33

46

61

kW

Pull−down resistance

Rdn_3V3

87

153

215

kW

Rise and Fall Time

Trf_3V3

20 pF load

1

1.5

2

ns

DIGITAL PADS (Common parameters)

Drive Strength

PAD_DR

12

mA

ESD

PAD_HBM

Human Body Model

2

kV

PAD_MM

Machine Model

200

V

PAD_CDM

Charge Discharge Model

500

V

Latch−up

PAD_LU

25°C, V < GNDO, V > VDDO

100

mA

CLOCKING CIRCUITRY

External clock frequency

EXT_CLK1

With presets 6 selected on

CONFIG_SEL (Note 2)

19.2

MHz

EXT_CLK2

With presets 4 or 7 selected

on CONFIG_SEL (Note 2)

26

MHz

Reference clock duty cycle

EXT_CLK_DC

40

50

60

%

External Input clock jitter

EXT_CLK_JT Maximum allowed jitter on

EXT_CLK

10

ns

Maximum speed

I2C_SPEED

In Sleep mode

100

kbps

All other modes

400

kbps

2. Many other clock frequencies are available through custom configuration of the internal PLL and clocking subsystem. See later in this

document and in the BelaSigna R261 Configuration and Communications Guide for more information on custom mode usage.