z86d73 ZiLOG Semiconductor, z86d73 Datasheet - Page 39

• Manufacturer Part Number: z86d73
• Description: 40/44/48-pin Low-voltage
• Manufacturer: ZiLOG Semiconductor

PS019402-1103
Register Description
Note:
Note:
LVD(D)0Ch Low-Voltage Detection Register
HI8(D)0Bh
This register holds the captured data from the output of the 8-bit Counter/Timer0.
Typically, this register is used to hold the number of counts when the input signal
is 1.
L08(D)0Ah
This register holds the captured data from the output of the 8-bit Counter/Timer0.
Typically, this register is used to hold the number of counts when the input signal
is 0.
Field
LVD
*
Field
T8_Capture_HI
Field
T8_Capture_L0
Default after POR
The LVD flag will be valid after enabling the detection for 20 µS (design
estimation, not tested in production). LVD does not work at STOP mode. It
must be disabled during STOP mode in order to reduce current.
Do not modify register P01M while checking a low-voltage condition.
Switching noise of both ports 0 and 1 together might trigger the LVD flag.
Bit Position
765432--
------1-
-------0
Bit Position
76543210
Bit Position
76543210
P
R
R
R/W
E
L
1
0*
1
0*
I
W
W
R
R
M
Description
Captured Data
No Effect
Description
Captured Data
No Effect
Description
Reserved
No Effect
LV flag set
LV flag reset
Enable LVD
Disable LVD
I
N
A
40/44/48-Pin Low-Voltage IR OTP
R
Y
Z86D73
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