sak-c868p-1rr Infineon Technologies Corporation, sak-c868p-1rr Datasheet - Page 170

• Manufacturer Part Number: sak-c868p-1rr
• Description: 8 - Bit Cmos Microcontroller
• Manufacturer: Infineon Technologies Corporation

5.3
An on-chip analog circuit detects brownout, if the voltage V
voltage V
tbd usec then the device will reset. When supply voltage V
V
clocks. Bit BO in the PMCON0 register is set when brownout detected if brownout
detection was enabled, this bit is cleared by hardware reset RESET and software. All
ports are tristated during brownout.
The V
maximum value of 1.8V.
PMCON0
Wake-up Control Register
Field
BO
EBO
-
User’s Manual
THRESHOLD
7
-
r
THRESHOLD
THRESHOLD
Brownout
while RESET is high, the reset is released once PLL is locked for 4096
The functions of the shaded bits are not described here
6
-
r
has a nominal value of 1.47V, a minimum value of 1.1V and a
Bits
3
4
[7:5]
momentarily while RESET pin is high. If this detection is active for
5
-
r
Typ Description
rw
rw
r
Brownout Status Bit.
0 : Brownout not detected.
1 : Brownout detected before the last power on if EBO was
set before the occurence of brownout..
This bit is set by hardware only, it is cleared by hardware
reset and software.
Enable Brownout detect.
0: Brownout module is disabled. Occurence of brownout
will not cause an internal reset.
1: Occurence of brownout will cause an internal reset and
BO will be set.
reserved;
returns ’0’ if read; should be written with ’0’;
EBO
rw
4
Reset, Brownout and System Clock Operation
5-4
BO
rw
3
SDSTAT
[Reset value: XXX000000
DDC
rh
2
DDC
dips below the threshold
recovers by exceeding
WS
rw
1
V 1.0, 2003-01
EWPD
rw
C868
0
B
]