MC68HC05K1 FREESCALE [Freescale Semiconductor, Inc], MC68HC05K1 Datasheet - Page 121

• Manufacturer Part Number: MC68HC05K1
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

11.11 3.3-Volt Control Timing
MC68HC05K0 • MC68HC05K1 — Rev. 2.0
Oscillator frequency
Internal operating frequency (f
2-pin RC oscillator frequency combined stability
3-pin RC oscillator frequency combined stability
Cycle time (1
RC oscillator stabilization time
Crystal oscillator startup time
Stop recovery startup time
RESET pulse width low
Timer resolution
IRQ interrupt pulse width low (edge-triggered)
IRQ interrupt pulse period
PA3–PA0 interrupt pulse width high (edge-triggered)
PA3–PA0 interrupt pulse period
OSC1 pulse width
1. V
2. Use only AT-cut crystals.
3. Minimum oscillator frequency with RC oscillator option is limited only by size of external R and C and leakage of external C.
4. Includes processing tolerances and variations in temperature and supply voltage; excludes tolerances of external R and C.
5. The 2-bit timer prescaler is the limiting factor in determining timer resolution.
6. The minimum period, t
3-pin RC oscillator
2-pin RC oscillator
Crystal
External clock
3-pin RC oscillator
2-pin RC oscillator
Crystal
External clock
f
f
f
f
routine plus 19 t
osc
osc
osc
osc
DD
= 2.0 MHz; V
= 2.0 MHz; V
= 1.0 MHz; V
= 1.0 MHz; V
= 3.3 Vdc 10%
(2)
(1)
/ceramic resonator
/ceramic resonator
f
(5)
op
cyc
)
DD
DD
DD
DD
.
= 3.3 Vdc 0.3 V; T
= 3.3 Vdc 0.3 V; T
= 3.3 Vdc
= 3.3 Vdc
ILIL
Characteristic
or t
IHIH
osc
Freescale Semiconductor, Inc.
, should not be less than the number of cycles it takes to execute the interrupt service
For More Information On This Product,
0.3 V; T
0.3 V; T
2)
(1)
A
A
Go to: www.freescale.com
A
A
= –40 C to +85 C
= 0 C to +40 C
Electrical Specifications
= –40 C to +85 C
= 0 C to +40 C
(4)
(3)
Symbol
t
OH
t
t
t
RCON
t
OXOV
t
RESL
t
t
t
f
t
ILCH
t
IHIH
f
ILIH
IHIL
osc
ILIL
f
f
cyc
RL
op
, t
osc
osc
OL
Note
Note
0.05
0.05
0.500
0.250
0.1
0.1
1000
Min
250
250
200
1.5
4.0
dc
dc
—
—
—
—
—
—
—
(3)
(2)
(2)
(2)
Electrical Specifications
(6)
(5)
3.3-Volt Control Timing
Max
100
100
1.2
2.0
2.0
2.0
0.6
1.0
1.0
1.0
Technical Data
—
—
—
—
—
—
—
—
35
20
15
10
1
MHz
MHz
Unit
t
t
t
t
ms
ms
ms
ns
ns
ns
ns
%
%
cyc
cyc
cyc
cyc