mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 571

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

A.2.2
A.2.2.1
The on-chip voltage regulator is intended to supply the internal logic and oscillator circuits allows no
external DC loads.
A.2.2.2
The capacitive loads are specified in
A.3
A.3.1
Table A-11
Freescale Semiconductor
Conditions are shown in
Num
Num
1
2
1
2
3
4
5
6
7
8
V
V
Startup, Oscillator, and PLL
DD
DDPLL
C
D
D
D
D
P
P
T
T
summarizes several startup characteristics explained in this section.
Output Loads
Startup
external capacitive load
Resistive Loads
Capacitive Loads
external capacitive load
POR release level
POR assert level
Reset input pulse width, minimum input time
Startup from Reset
Interrupt pulse width, IRQ edge-sensitive mode
Wait recovery startup time
LVR release level
LVR assert level
Table A-4
Characteristic
Table A-10. Voltage Regulator — Capacitive Loads
unless otherwise noted
Rating
Table A-11. Startup Characteristics
Table
MC9S12E256 Data Sheet, Rev. 1.08
A-10. Ceramic capacitors with X7R dielectricum are required.
C
Symbol
C
DDPLLext
DDext
Symbol
PW
V
V
PW
V
V
n
t
PORR
PORA
WRS
LVRR
LVRA
RST
RSTL
IRQ
Min
200
90
0.97
2.25
Min
192
20
—
—
2
Appendix A Electrical Characteristics
Typ
440
220
Typ
—
—
—
—
—
—
—
—
Max
2.07
2.55
12000
196
5000
14
Max
—
—
—
—
Unit
n
t
t
ns
osc
cyc
V
V
osc
V
V
Unit
nF
nF
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