Voltage Comparator Registers - NEC V850E/Dx3 Preliminary User's Manual

Voltage Comparator
Bit position
7
1 to 0
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27.2 Voltage Comparator Registers

The Voltage Comparator is controlled by means of the following registers:
Table 27-1 Voltage Comparator registers overview
Register name
Voltage Comparator n control register
Voltage Comparator n status register
Table 27-2 Base addresses of Voltage Comparator instances
Instance number
0
1
(1) VCCTLn - Voltage Comparator n control register
The 8-bit VCCTLn register controls whether the Voltage Comparator is
operating or is in stand-by mode. Further it specifies whether an interrupt is
generated when V
transitions.
Access This register can be read/written in 8-bit or 1-bit units.
Address <base>
Initial Value 00 . This register is cleared by any reset.
H
7
VCEn
R/W
Table 27-3 VCCTLn register contents
Bit name Function
VCEn Enable Voltage Comparator
0: stand-by (VCSTRn.VCFn = 1, VCMPO0 = high level)
1: Operating
ESn[1:0] VCMPO0 edge selection for interrupt
ESn1
0
0
1
1
Preliminary User's Manual U17566EE1V2UM00
Base address
FFFF FF10
H
FFFF FF14
H
rises above or falls below V
CMPn
6 5 4
0 0 0
R R R
ESn0 Operation
falling edge
0
rising edge
1
reserved
0
both edges
1
Chapter 27
Shortcut Address
VCCTLn <base>
VCSTRn <base> + 2
or any at of both
LVI
3 2 1
0 0 ESn1 ESn0
R R R/W
H
0
R/W
873