STA8100GA datasheet(7/42 Pages) STMICROELECTRONICS

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DS13006 Rev 4

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STA8100GA

Pin description

Table 1. Power supply pins

Symbol

I/O voltage(1)

I/O

Description

Ball

VRF_IN

1.70 to 3.6 V

PWR LDO RF power input - IO ring RF

VRF_OUT

1.2 V

PWR LDO RF power output

VCC_LNA

1.2 V

PWR LNA power input

VCC_PLL

1.2 V

PWR RF VCC power input

VBK_IN(2)

1.62 to 3.6 V

PWR LDO Backup power input - IO ring0

VBK_OUT

1.2 V

PWR LDO Backup power output

VCORE_IN

1.70 to 3.6 V

PWR LDO Core power input

VDD_EXT_REG 1.2 V

PWR LDO Core power output

B6, B7, B8, G6

VIO2_IN

3 to 3.6 V

PWR LDO IO ring2 power input - IO ring2

D8, H6, H7

VIO1_EXT

1.70 or 3.6 V

PWR LDO IO ring1 power output - IO ring1 input

A3, C1

V2V5_OUT

2.5 V

PWR LDO Core 2.5 V output

GND_PMU

GND

GND Main voltage regulator ground

GND_BKP_PMU GND

GND Backup voltage regulator ground

GND_TSENS

GND

GND Temperature sense block ground

GND_RF

GND

GND RF ground

G2, G3, G4, G5, H2, H3

GND

GND Ground

A1, A9, E5, E6, F5, F6

1. Refer to Section 4: Electrical specifications.

2. Backup power shall be applied at the same time or before VCORE_IN, not after.

Table 2. Main function pins

Symbol

I/O voltage(1)

I/O

Description

Ball

Reset state

EXT_REG_SEL

VCORE_IN

LDO Core Disable.

When High the LDO CORE is off. Core is supplied

by an external power source.

TEST

IO ring2

TEST - JTAG enable. In mission/application mode

this pin must be connected to GND.

Hi-Z/PD

RTC_XTI

VBK_IN /

IO ring0

If 32 kHz oscillator enabled then input of the 32

kHz oscillator amplifier circuit. Else CMOS input

as electrical characteristic table. Both cases, it is

the reference for real time clock counter circuitry.

RTC_XTO

VBK_IN /

IO ring0

Output of the oscillator amplifier circuit.

RESETn

VBK_IN /

IO ring0

Reset input with Schmitt-Trigger characteristics

and noise.

Hi-Z/ PD

WAKEUP

VBK_IN /

IO ring0

When high, the device will wakeup and exit from

Standby mode. It has higher priority compared to

Standby_in pin. Wakeup from Standby mode.

Hi-Z

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