MC68HC05SR3 Datasheet, PDF (81/96 Pages) Freescale Semiconductor, Inc – High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller Units

11.5
Control Timing
Table 11-4 Control Timing for 5V Operation
(V_DD=5.0Vdc ±10%, V_SS=0Vdc, temperature range=0 to 70°C)
CHARACTERISTICS
SYMBOL
MINIMUM MAXIMUM UNIT
Frequency of operation
RC oscillator Option
Crystal option
External clock option
f_OSC
0.1
0.1
dc
4.0
MHz
4.0
MHz
4.0
MHz
Internal operating frequency (f_OSC/2)
RC oscillator
Crystal
External clock
f_OP
—
—
2.0
MHz
2.0
MHz
dc
2.0
MHz
Processor cycle time (1/f_OP)
t_CYC
500
—
ns
RC oscillator stabilization time
t_RCON
—
1
ms
Crystal oscillator start-up time (crystal oscillator)
t_OXOV
—
100
ms
Stop recovery start-up time (crystal oscillator)
t_ILCH
—
100
ms
RESET pulse width low
Timer resolution⁽²⁾
t_RL
1.5
—
t_CYC
t_RESL See note (2)
—
t_CYC
Interrupt pulse width low (edge-triggered)
t_ILIH
125
—
ns
Interrupt pulse period
t_ILIL
See note (3)
—
t_CYC
PA0-PA7 interrupt pulse width high (edge-triggered)
t_IHIL
125
—
ns
PA0-PA7 interrupt pulse period
t_IHIH
See note (3)
—
t_CYC
OSC1 pulse width
t
90
—
ns
RC oscillator frequency combined stability⁽⁴⁾
f_OSC=2.0MHz, V_DD=5.0Vdc±10%, t_A=-40°C to +85°C
∆f_OSC
–
f_OSC=2.0MHz, V_DD=5.0Vdc±10%, t_A=0°C to +40°C
∆f_OSC
–
±25
%
±15
%
Notes:
(1) V_DD=5.0Vdc±10%, V_SS=0Vdc, t_A=t_L to t_H
(2) The TIMER input pin is the limiting factor in determining timer resolution.
(3) The minimum period t_ILIL or t_IHIH should not be less than the number of cycles it takes to execute the interrupt
service routine plus 19 t_CYC.
(4) Effects of processing, temperature, and supply voltage (excluding tolerances of external R and C).
11
MC68HC05SR3
ELECTRICAL SPECIFICATIONS
TPG
Freescale
11-5