User Manual

Advanc
e
Information

2015 Microchip Technology Inc.
page
18
BM78SPPS5MC2 , RN4678
Note:
a. Auto pattern can use external reset.
b. Manual pattern can use external reset and reset command.
8.0 LED DRIVER
There are one dedicate LED drivers to control the LEDs. The LED can be connected directly
with BM78. The LED max current is 4 mA and it has 16 steps to trim Brightness.
BM78
LED1
LDO33_O
The status LED (LED1) indicates:
 Standby
 Link Back
 Low Battery
 Inquiry
 Link
 Page
Each indication is a configurable flashing sequence. LED brightness can also be configured.
9.0 MEMORY
A synchronous single port RAM interface is used. There are sufficient ROM and RAM to
fulfill the requirement of processor. A register bank, a dedicated single port memory and a flash
memory are connected to the processor bus. The processor coordinates all the link control
procedures and data movement using a set of pointers registers.