RYZ024A

Datasheet

R19DS0115EU0101 Rev.1.01

Page 5 of 38

Nov.14.22

USIM Interfaces

This section describes the SIM0 and SIM1 Interfaces.

SIM0 Interface

This is the main external SIM interface. It can be used with removable or non-removable SIM cards or with

soldered SIM chips. The power supply of the SIM is managed by the modem to ensure lowest power

consumption of the SIM.

Note: See section Power for behavior of IOs in Deep Sleep mode.

Table 3.

SIM0 Signals

Pad

#

Pad Name

Primary

Function

Power

Group

Direction

Pad

type1

State at

rest

Comment

42

SIM0_CLK

SIM0_CLK

PVDD_1V8

Out

BIDIR

Out-0,

2mA

Main SIM

45

SIM0_DETECT2

SIM0_DETECT

PMU_5V

In

IN

HighZ

Main SIM

44

SIM0_IO

SIM0_IO

PVDD_1V8

In/Out

BIDIR

HighZ,

2mA

Main SIM

43

SIM0_RSTN

SIM0_RSTN

PVDD_1V8

Out

BIDIR

Out-0,

2mA

Main SIM

73

SIM0_VCC3

SIM0_VCC

PVDD_1V8

Out

Supply

Out-0,

2mA

Main SIM

1.

USIM pad type’s electrical characteristics are detailed in Table 19.

2.

SIM0_DETECT is active HIGH (HIGH when a card is present, LOW when no card is present). It can be configured

as a WAKE pin via software command.

3.

See range of values in Table 13.

SIM1 Interface

This interface can be used as a second SIM interface for RYZ024A, typically used for soldered SIM chips

(since it lacks SIM detect and SIM VCC). If design only has one SIM, it is preferred then to use the main SIM

interface (see Section SIM0 Interface above).

Note: See section Power for behavior of IOs in Deep Sleep mode.

Table 4.

SIM1 Signals

Pad # Pad Name

Primary

Function

Alternate

Function1

Power

Group

Direction

Pad

Type2

State at

reset

40

GPIO26/SIM1_CLK

GPIO26

SIM1_CLK

PVDD_1V8

Out

BIDIR

Out-0,

2 mA

41

GPIO27/SIM1_RESETN

GPIO27

SIM1_RESETN

PVDD_1V8

Out

BIDIR

Out-0,

2 mA

39

GPIO25/SIM1_IO

GPIO25

SIM1_IO

PVDD_1V8

In/Out

BIDIR

HighZ,

2 mA

1. Alternate functions will be available in future versions via SW upgrade.

2. Pad types electrical characteristics are detailed in Table 19.

Important: Both SIM0 and SIM1 interfaces use 1.8 V signaling.