K20P48M50SF0 Datasheet, PDF (41/60 Pages) Freescale Semiconductor, Inc – K20 Sub-Family

6.6.2
Peripheral operating requirements and behaviors
CMP and 6-bit DAC electrical specifications
Table 25. Comparator and 6-bit DAC electrical specifications
Symbol Description
Min.
Typ.
Max.
Unit
V_DD
Supply voltage
1.71
—
3.6
V
I_DDHS Supply current, High-speed mode (EN=1, PMODE=1)
—
—
200
μA
I_DDLS
Supply current, low-speed mode (EN=1, PMODE=0)
—
—
20
μA
V_AIN
Analog input voltage
V_SS – 0.3
—
V_DD
V
V_AIO
Analog input offset voltage
—
—
20
mV
V_H
Analog comparator hysteresis¹
• CR0[HYSTCTR] = 00
• CR0[HYSTCTR] = 01
• CR0[HYSTCTR] = 10
• CR0[HYSTCTR] = 11
—
5
—
mV
—
10
—
mV
—
20
—
mV
—
30
—
mV
V_CMPOh
V_CMPOl
t_DHS
t_DLS
I_DAC6b
INL
DNL
Output high
Output low
Propagation delay, high-speed mode (EN=1,
PMODE=1)
Propagation delay, low-speed mode (EN=1,
PMODE=0)
Analog comparator initialization delay²
6-bit DAC current adder (enabled)
6-bit DAC integral non-linearity
6-bit DAC differential non-linearity
V_DD – 0.5
—
—
—
20
50
80
250
—
—
—
7
–0.5
—
–0.3
—
—
V
0.5
V
200
ns
600
ns
40
μs
—
μA
0.5
LSB³
0.3
LSB
1. Typical hysteresis is measured with input voltage range limited to 0.6 to V_DD-0.6V.
2. Comparator initialization delay is defined as the time between software writes to change control inputs (Writes to DACEN,
VRSEL, PSEL, MSEL, VOSEL) and the comparator output settling to a stable level.
3. 1 LSB = V_reference/64
K20 Sub-Family Data Sheet, Rev. 4 5/2012.
Freescale Semiconductor, Inc.
41