C8051T630DK Silicon Laboratories Inc, C8051T630DK Datasheet - Page 98
C8051T630DK
Manufacturer Part Number
C8051T630DK
Description
KIT DEV FOR C8051T630 FAMILY
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051T630DK
Contents
Board, daughter boards, power adapter, cables, documentation and software
Processor To Be Evaluated
C8051T63x
Interface Type
USB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051T630, T631, T632, T633, T634 and T635 MCUs
For Use With
336-1465 - BOARD SOCKET DAUGHTER 20-QFN
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1464
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C8051T630/1/2/3/4/5
SFR Definition 18.1. VDM0CN: V
SFR Address = 0xFF
18.3. External Reset
The external RST pin provides a means for external circuitry to force the device into a reset state. Assert-
ing an active-low signal on the RST pin generates a reset; an external pullup and/or decoupling of the RST
pin may be necessary to avoid erroneous noise-induced resets. See Table 5.4 for complete RST pin spec-
ifications. The PINRSF flag (RSTSRC.0) is set on exit from an external reset.
18.4. Missing Clock Detector Reset
The Missing Clock Detector (MCD) is a one-shot circuit that is triggered by the system clock. If the system
clock remains high or low for more than 100 µs, the one-shot will time out and generate a reset. After a
MCD reset, the MCDRSF flag (RSTSRC.2) will read 1, signifying the MCD as the reset source; otherwise,
this bit reads 0. Writing a 1 to the MCDRSF bit enables the Missing Clock Detector; writing a 0 disables it.
The state of the RST pin is unaffected by this reset.
98
Name
Reset
5:0
Bit
Type
7
6
Bit
VDDSTAT
VDMEN
Unused
VDMEN
Name
Varies
R/W
7
VDDSTAT
V
This bit turns the V
tem resets until it is also selected as a reset source in register RSTSRC (SFR Def-
inition 18.2). Selecting the V
may generate a system reset. In systems where this reset would be undesirable, a
delay should be introduced between enabling the V
reset source. See Table 5.4 for the minimum V
0: V
1: V
V
This bit indicates the current power supply status (V
0: V
1: V
Unused. Read = 000000b; Write = Don’t care.
Varies
DD
DD
R
6
DD
DD
DD
DD
Monitor Enable.
Status.
Monitor Disabled.
Monitor Enabled.
is at or below the V
is above the V
R
5
0
DD
DD
DD
monitor circuit on/off. The V
Monitor Control
monitor threshold.
Rev. 1.0
DD
R
4
0
DD
monitor threshold.
monitor as a reset source before it has stabilized
Function
R
3
0
DD
DD
Monitor turn-on time.
R
2
0
DD
DD
Monitor cannot generate sys-
Monitor and selecting it as a
Monitor output).
R
1
0
R
0
0
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