powerSTEP01
Programming manual
11.1.27 CONFIG
The CONFIG register has the following structure:
Table 39. CONFIG register
CM_VM
Bit 15
Bit 14
Bit 13
Bit 5
Bit 12
Bit 11
Bit 10
Bit 2
Bit 9
Bit 8
0
1
F_PWM_INT
F_PWM_DEC
VCCVAL UVLOVAL
VCCVAL UVLOVAL
PRED_EN
TSW
Bit 7
Bit 6
Bit 4
Bit 3
Bit 1
Bit 0
EN_VSCO SW_MOD
MP
0
1
OC_SD
OC_SD
EXT_CLK
OSC_SEL
E
EN_TQRE SW_MOD
EXT_CLK
OSC_SEL
G
E
The OSC_SEL and EXT_CLK bits set the system clock source:
Table 40. Oscillator management
EXT_CLK
OSC_SEL[2..0]
Clock source
OSCIN
OSCOUT
0
0
0
0
0
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
0
0
0
1
1
1
1
0
0
Internal oscillator: 16 MHz
Unused
Unused
Supplies a 2 MHz
clock
Internal oscillator: 16 MHz
Internal oscillator: 16 MHz
Internal oscillator: 16 MHz
Internal oscillator: 16 MHz
Unused
Unused
Unused
Unused
Supplies a 4 MHz
clock
Supplies a 8 MHz
clock
Supplies a 16 MHz
clock
External crystal or resonator:
8 MHz
Crystal/resonator
driving
Crystal/resonator
driving
External crystal or resonator:
16 MHz
Crystal/resonator
driving
Crystal/resonator
driving
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STMICROELECTRONICS [ ST ]
