ST7LNB1Y0 Datasheet, PDF (1/36 Pages) STMicroelectronics – DiSEqC™ slave microcontroller for SaTCR based LNBs and switchers

ST7LNB1Y0
DiSEqC™ slave microcontroller
for SaTCR based LNBs and switchers
Features
■ Clock, reset and supply management
– Reduced power consumption
– Safe power on/off management
by low voltage detector (LVD)
– Internal 8 MHz oscillator
■ Communication interface
– Two DiSEqC^TM communication interfaces
– Four I²C communication interfaces
■ I/O ports
– 4 output pins for control of a legacy matrix
Figure 1. Block diagram
V_DD
V_SS
RESET
8 MHz. RC OSC
LVD/AVD
Internal
CLOCK
POWER
SUPPLY
CONTROL
8-BIT CORE
ALU
PARAMETER
EEPROM
SO16 narrow
Description
The ST7LNB1Y0 is an 8-bit microcontroller
dedicated to DiSEqC slave operation in SaTCR
based LNBs (low-noise blocks) and switchers.
13/18 V & 22 kHz
Detector
DiSEqC Interface
I²C 1
I²C 2
I²C 3 /
LEGACY MATRIX
CONTROL
I²C 4 /
LEGACY MATRIX
CONTROL
DRX1
DRX2
DTX
SDA1
SCL1
SDA2
SCL2
SDA3 / MAT2
SCL3 / MAT1
SDA4 / MAT4
SCL4 / MAT3
Table 1. Device summary
Features
Part number: ST7LNB1Y0M6
Packages
Peripherals
Operating voltage
Temperature range
SO16 narrow
DiSEqC communication interface, 22 kHz tone detector, 13/18 V detector
4.5 to 5.5 V
-40 to +85 °C
July 2007
Rev 8
1/36
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