RN4871 datasheet(35/48 Pages) MICROCHIP

35 / 48 page

 2016 Microchip Technology Inc.

DS50002489A-page 35

RN4870/71

9.0

TIMING CHARACTERISTICS

Figure 9-1 shows the timing diagram for the RN4870/

71 modules when it is Reset in the Test mode and

Application mode. Figure 9-2 shows the timing diagram

for the module when it is powered on. In Application

mode, when RN4870/71 is ready to talk to MCU after

Reset, the module provides a UART response

indicating that the Reset is complete. For more details,

refer to the “RN4870/71 Bluetooth® Low Energy Mod-

ule User's Guide” (DS50002466A).

FIGURE 9-1:

TIMING DIAGRAM OF RN4870/71 UART READY AFTER RESET (IN TEST AND

APPLICATION MODE)

FIGURE 9-2:

TIMING DIAGRAM OF RN4870/71 UART WHEN POWERED ON (IN TEST AND

APPLICATION MODE)

Ext

Reset

1mS

P2_0=0

P2_0=1

25mS

Test Mode

Process

Application

Mode

Process

46mS

68mS

UART Ready

for MCU

UART Ready

for MCU

Status pin/UART

Report Command

VBAT

P2_0=0

P2_0=1

25mS

Test Mode

Process

Application

Mode

Process

46mS

68mS

UART Ready

for MCU

UART Ready

for MCU

Status pin/UART

Report Command

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