33884 Datasheet, PDF (2/21 Pages) Freescale Semiconductor, Inc – Switch Monitor Interface

INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
SP1
SP2
SP3
SP4
SG1
SG2
SG3
SG4
SG5
SG6
SB1
SB2
VDD
VPWR
VSS
VBG
Switch-to-Ground
and
Switch-to-Battery
Sense Inputs
(x4)
Programmable Input Blocks (1-4)
Metallic or Non-metallic
Enable or Disable Input Block (Tri-State)
Switch-to-Ground
Sense Inputs
(x6)
Switch-to-Battery
Sense Inputs
(x2)
Fixed Input Blocks
GND (1-6)
Switch-Ground, Metallic or Non-
metallic,
Enable or Disable FIB (Tri-State)
Fixed Input Blocks
Battery (1-2)
Switch-Batt, Metallic or Non-Metallic,
Enable or Disable FIB (Tri-State)
SPI Decode
PIB Configure, FIB/PIB Tri-State
FIB/PIB Metallic
SPI Interface
V_DD, V+
Distribution
(To all input blocks)
SPI Encode
Mode Switch Status
Quiescent
Current
Control
Mode Control
Normal, Polling, Sleep
Polling Mode
Oscillator
Wake Up
Slave Sync
Master/Slave Select
CS
SI
SO
SCLK
INT
RST
SYNC
MASL
Figure 2. 33884 Simplified Block Diagram
33884
2
Analog Integrated Circuit Device Data
Freescale Semiconductor