Low Voltage Reset (Rstcfg); Low Voltage Power-On Reset Reference Circuit (Generally Not Required); Low Voltage Button Reset Reference Circuit - STC micro STC8A8K64D4 Series Reference Manual

STC8A8K64D4 Series Manual

6.3.3 Low voltage reset (RSTCFG)

RSTCFG (Reset Configuration Register)
Symbol Address
RSTCFG FFH
ENLVR: Low voltage detection reset enable bit
0: Disable low voltage detection reset. When the system detects a low-voltage event, a low-voltage interrupt will occur.
1: Enable low voltage detection reset. When the system detects a low-voltage event, it will reset automatically.
P54RST: RST pin function selection bit
0: RST pin is used as common I/O (P5.4).
1: RST pin is used as reset pin.
LVDS[1:0] : Low voltage detection threshold voltage setting bits
LVDS[1:0] Low voltage detection threshold voltage
00
01
10
11

6.3.4 Low voltage power-on reset reference circuit (generally not required)

6.3.5 Low voltage button reset reference circuit

B7 B6
- ENLVR
(Low-level reset)
2.0V
2.4V
2.7V
3.0V
301R
P5.4-RST
low voltage reset
B5 B4
- P54RST
-
B3 B2 B1
- -
B0
LVDS[1:0]
- 61 -