Datasheet

78K0/Ix2 CHAPTER 28 ELECTRICAL SPECIFICATIONS
R01UH0010EJ0500 Rev.5.00 709
Feb 28, 2012
Caution The pins mounted depend on the product. Refer to Caution 2 at the beginning of this chapter.
28.5.5 Comparator
(T
A = 40 to +105C, 2.7 V AVREF VDD 5.5 V, VSS = AVSS = 0 V)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
Input offset voltage VIOCMP 5 40 mV
CMP0+, CMP1+, CMP2+
0 AV
REF V Input voltage range VICMP
CMPCOM
0.045 0.9 AV
REF V
Response time tCR, tCF Input amplitude 100 mV 70 150 ns
Operation stabilization wait time
Note
1
t
CMP 1
s
CVRE: 0 1
Note 2
20
s Reference voltage stabilization wait
time
tVR
CVRE = 1,
When the reference voltage level is
changed
Note 3
5
s
Notes 1. Time required until a state is entered where the DC and AC specifications of the comparator are satisfied after
the operation of the comparator has been enabled (CMPnEN bit = 1: n = 0 to 2)
2. Enable comparator output (CnOE bit = 1; n = 0 to 2) after enabling operation of the internal reference voltage
generator (by setting the CVRE bit to 1) and waiting for the operation stabilization time to elapse.
3. Enable comparator output (CnOE bit = 1; n = 0 to 2) after enabling operation of the internal reference voltage
generator (by setting the CVRE bit to 1), changing the internal reference voltage level, and waiting for the
operation stabilization time to elapse.
t
CR
t
CF
+100 mV
-100 mV
Comparator
ref. voltage
Output voltage V
O
Input voltage V
IN