mcf51em256 Freescale Semiconductor, Inc, mcf51em256 Datasheet - Page 28

• Manufacturer Part Number: mcf51em256
• Description: Microcontrollers Covers Mcf51em256 Mcf51em128
• Manufacturer: Freescale Semiconductor, Inc

1
2
Electrical Characteristics
28
Num
Typical values assume V
only and are not tested in production.
DC potential difference.
10
11
12
13
14
15
5
6
7
8
9
Ref
Voltage
Low
Input
Voltage
Input
Capacit
ance
Input
Resista
nce
Analog
Source
Resista
nce
ADC
Convers
ion
Clock
Freq.
Charact
eristic
16-bit modes
8/10/12-bit modes
16 bit modes
13/12 bit modes
11/10 bit modes
9/8 bit modes
ADLPC = 0, ADHSC = 1
ADLPC = 0, ADHSC = 0
ADLPC = 1, ADHSC = 0
4MHz < f
4MHz < f
4MHz < f
DDA
f
f
f
f
f
f
f
f
ADCK
ADCK
ADCK
ADCK
ADCK
ADCK
ADCK
ADCK
MCF51EM256 Series ColdFire Microcontroller Data Sheet, Rev.3
Conditions
= 3.0 V, Temp = 25 °C, f
ADCK
ADCK
ADCK
> 8MHz
< 4MHz
> 8MHz
< 4MHz
> 8MHz
< 4MHz
> 8MHz
< 8MHz
Preliminary—Subject to Change Without Notice
Table 13. 16-bit ADC Operating Conditions
< 8MHz
< 8MHz
< 8MHz
Symb
V
V
C
R
f
ADCK
ADCK
R
REFL
ADIN
ADIN
ADIN
AS
= 1.0 MHz unless otherwise stated. Typical values are for reference
V
V
Min
REFL
1.0
1.0
1.0
SSA
—
—
—
—
—
—
—
—
—
—
—
—
—
V
Typ
SSA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8
4
2
1
V
V
Max
REFH
0.5
2.5
10
10
10
SSA
5
5
1
2
1
2
5
2
5
5
8
5
MHz
Unit
kΩ
kΩ
pF
V
V
Freescale Semiconductor
External to MCU
ADLSMP=0
Comment
Assumes