MK20FN1M0VMD12 Freescale Semiconductor, MK20FN1M0VMD12 Datasheet - Page 40

• Manufacturer Part Number: MK20FN1M0VMD12
• Description: ARM Microcontrollers - MCU KINETIS 1MB USB
• Manufacturer: Freescale Semiconductor

Specifications of MK20FN1M0VMD12

• Rohs: yes
• Core: ARM Cortex M4
• Processor Series: K20
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 120 MHz
• Program Memory Size: 1 MB
• Data Ram Size: 128 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.71 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: MAPBGA-144
• Mounting Style: SMD/SMT

Peripheral operating requirements and behaviors
which are defined as:
The SCALER value is derived from the fractional divider specified in the SIM's
CLKDIV4 register:
In case the reciprocal of SCALER is an integer, the duty cycle of NFC clock is 50%,
means T
For example, if SCALER is 0.2, then T
However, if SCALER is 0.667, then T
40
Num
t
t
t
t
t
t
CLS
CLH
ALS
WP
CS
CH
H
= T
The reciprocal of SCALER must be a multiple of 0.5. For
example, 1, 1.5, 2, 2.5, etc.
L
. In case the reciprocal of SCALER is not an integer:
NFC_CLE setup time
NFC_CEn setup time
NFC_WP pulse width
NFC_ALE setup time
NFC_CLE hold time
NFC_CEn hold time
K20 Sub-Family Data Sheet, Rev. 4, 10/2012.
Description
SCALER =
Table 25. NFC specifications
Table continues on the next page...
T
T
T
NFC
L
H
=
=
(1 + SCALER / 2) x
(1 – SCALER / 2) x
=
SIM_CLKDIV4[NFCFRAC] + 1
L
SIM_CLKDIV4[NFCDIV] + 1
H
T +
= 2/3 x T
L
= T
NOTE
T
T
H
T
H
T
T
NFC
NFC
L
H
T
T
= T
L
=
L
NFC
T
SCALER
NFC
input clock
T
T
2T
2T
and T
/2.
T
NFC
NFC
2
2
H
2T
H
H
T
T
+ T
H
Min.
+ T
+ T
H
L
+ T
– 1
+ T
L
L
L
H
– 1
L
– 1
– 1
L
= 1/3 x T
Freescale Semiconductor, Inc.
Max.
—
—
—
—
—
—
NFC
.
Unit
ns
ns
ns
ns
ns
ns