sx1441 Semtech Corporation, sx1441 Datasheet - Page 18

• Manufacturer Part Number: sx1441
• Description: Bluetooth V1.2 Soc For Voice And Data Applications With Dsp Capabilities
• Manufacturer: Semtech Corporation

Personal Area Network
3.4.6 Analog Reset Specifications
Note1 : Values above are specified across temperature range unless otherwise specified
Note2 : Values marked with asterisks are not production tested and guaranteed by design.
3.5
3.5.1 Features
3.5.2 Register Map
© Semtech 2006
Name
RegSysClock
RegSysMisc
RegSysPre0
RegSysRcTrim1
RegSysRcTrim2
Pos
supervision
supervision
• On-chip RC oscillator
• Three available clock sources: RC oscillator, SYS_CLOCK_IN pin, SLW_CLOCK_IN pin
• Two divider chains: high-prescaler (8 bits) and low-prescaler (15 bits).
• CPU clock disabled in halt mode.
VDD_DIG
CLOCK DISTRIBUTION UNIT
VDD_M
POR
RegSysClock
VDD_DIG
VDD_M /
reset
Symbol
V
V
t
t
t
t
t
drop
t
drop
V
rise
V
rise
rstD
on
rstD
on
rstT
rstT
(*)
(*)
(*)
(*)
(*)
(*)
(*)
(*)
r/w
Figure 10 – Power-On / Brownout reset conditions
Table 15 – Clock distribution registers addresses
V
t
t
rise
on
Reset
rstT
Start Voltage
Drop Voltage
Start Voltage
Drop Voltage
Description
Reset Time
Reset Time
Drop Time
Drop Time
Rise Time
Rise Time
Table 14 - POR specifications
Function
18
Address (Hex)
0x0012
0x0013
0x0015
0x001B
0x001C
Min
0.8
0.8
6.0
0.8
0.8
6.0
-
-
-
-
t
drop
SX1441 – Bluetooth® 1.2 SoC
Max
300
300
1.5
1.5
1.5
1.5
15
15
-
-
www.semtech.com
V
rstD
Data Sheet
Unit
μs
μs
μs
μs
μs
μs
V
V
V
V