MC68HC908RF2CFA Freescale Semiconductor, MC68HC908RF2CFA Datasheet - Page 183

• Manufacturer Part Number: MC68HC908RF2CFA
• Description: IC MCU W/UHF TX 2K FLASH 32LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908RF2CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: LVD, POR, PWM, RF Mod
• Number Of I /o: 12
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

14.10 Internal Oscillator Characteristics
14.11 LVI Characteristics
MC68HC908RF2 — Rev. 4.0
MOTOROLA
Internal oscillator base frequency without trim
Internal oscillator base frequency
Internal oscillator multiplier
External clock option
LVI low battery sense voltage
LVI trip voltage
LVI trip voltage hysteresis
V
V
Response time — SR ≤ SR
Response time — SR > SR
Enable time (enable to output transition)
1. V
2. Internal oscillator is selectable through software for a maximum frequency. Actual frequency will be multiplier (N) x base
3. f
4. Multiplier must be chosen to limit the maximum bus frequency to the maximum listed in
5. No more than 10% duty cycle deviation from 50%
1. The LVI samples V
2.
with trim
3 V ± 10%
2 V ± 10%
DD
DD
frequency.
Bus
DD



slew rate — rising
slew rate — falling
V DD V LVR
-----------------------------------
= (f
= 1.8 V to 3.3 V, V
SR max
(2) (3)
INTOSC
–
(1)
Characteristic
Characteristic
/ 4) x (internal oscillator multiplier)
–
(5)
V DD V LVR
-----------------------------------
DD
, V
SS
(4)
SR
–
LVR
max
max
= 0 Vdc, T
(1)
, and V
(1)
(1)
Freescale Semiconductor, Inc.



+
For More Information On This Product,
LVS
1.5
A
= –40
are V
(2) (3)
Go to: www.freescale.com
o
DD
C to +85
Electrical Specifications
voltages.
f
Symbol
f
INTOSC(I)
f
EXTOSC
INTOSC
Symbol
o
V
H
V
SR
SR
t
t
N
C, unless otherwise noted
resp
resp
t
LVR
LVS
LVR
en
R
F
230.4
291.8
128 k
128 k
1.90
1.76
Min
Min
50
—
—
—
—
—
1
307.2
307.2
2.00
1.85
Typ
Typ
70
—
—
—
—
—
Internal Oscillator Characteristics
—
—
—
14.9 Control
Electrical Specifications
Note
384.0
322.6
Max
Max
2.15
2.00
0.05
0.10
127
6.0
Timing.
16
90
50
8
(2)
Data Sheet
Unit
MHz
Unit
V/µs
V/µs
kHz
kHz
mV
—
µs
µs
µs
V
V
183