MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 22

• Manufacturer Part Number: MCF51EM256CLL
• Description: IC MCU 32BIT 256KB FLASH 100LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF51EMr

Specifications of MCF51EM256CLL

• Core Processor: Coldfire V1
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LCD, LVD, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 16x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Processor Series: MCF51EM
• Core: ColdFire V1
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: RS-232, LIN
• Maximum Clock Frequency: 50 MHz
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: DEMOEM
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Electrical Characteristics
1
2
3
4
5
6
7
8
9
10
22
Num C
22
23
24
25
26
Typical values are based on characterization data at 25 °C unless otherwise stated.
Switch to lower frequency when the low-voltage interrupt asserts (V
Factory trimmed at V
Measured with V
Measured with V
Measured with V
Power supply must maintain regulation within operating V
conditions. If positive injection current (V
in external power supply going out of regulation. Ensure external V
current. This will be the greatest risk when the MCU is not consuming power. Examples are: if no system clock is present, or
if clock rate is very low (which would reduce overall power consumption).
All functional non-supply pins are internally clamped to V
Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values for positive and negative clamp voltages, then use the larger of the two values.
The RESET pin does not have a clamp diode to V
45
44
43
42
41
40
39
38
1.9
C
C
D RAM retention voltage
D
P
Low-voltage
detection
threshold
Low-voltage
warning
threshold
Low-voltage
warning
DC injection current
V
DC injection current (Total MCU limit, includes sum of all
stressed pins), V
IN
> V
2.2
DD,
In
In
In
= V
= V
= V
V
DD
IN
2.5
DD
SS
DD
PullUp Resistor
< V
Low range — V
Low range — V
V
V
V
V
= 3.0 V, Temp = 25°C
.
.
or V
DD
DD
DD
DD
IN
MCF51EM256 Series ColdFire Microcontroller Data Sheet, Rev.3
SS
V
> V
Figure 4. Pullup and Pulldown Typical Resistor Values
DD
7 8 9 10
falling, LVWV = 1
rising, LVWV = 1
falling, LVWV = 0
rising, LVWV = 0
SS
(V)
2.8
Parameter
DD,
.
V
Preliminary—Subject to Change Without Notice
(single pin limit),
Table 10. DC Characteristics (continued)
IN
3.1
< V
DD
DD
In
> V
SS
falling
rising
DD
3.4
) is greater than I
DD
. Do not drive this pin above V
85C
25C
-40C
SS
DD
and V
range during instantaneous and operating maximum current
DD
DD
41.5
40.5
39.5
38.5
37.5
Symbol
DD
, the injection current may flow out of V
41
40
39
38
37
V
V
V
LVDH
V
.
LVWH
LVWL
LVDL
RAM
I
load will shunt current greater than maximum injection
1.9
IC
).
2.2
2.580
2.360
1.800
1.870
2.590
2.300
–0.2
Min
–5
—
DD
.
PullDown Resistor
2.5
Typical
V
1.845
1.915
2.655
2.645
2.355
2.425
DD
0.6
(V)
—
—
2.8
Freescale Semiconductor
1
3.1
DD
1.890
1.960
2.720
2.710
2.410
2.490
Max
1.0
0.2
and could result
5
3.4
85C
25C
-40C
Unit
mA
mA
V
V
V
V
V