MC68HC08AS20 Datasheet, PDF (369/386 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

21.6 Control Timing
Characteristic
Symbol
Min
Max
Unit
Bus Operating Frequency (4.5–5.5 V — V_DD Only)
f_BUS
—
8.4
M Hz
RESET Pulse Width Low
t_RL
1.5
—
t_cyc
IRQ Interrupt Pulse Width Low (Edge-Triggered)
t_ILHI
1.5
—
t_cyc
IRQ Interrupt Pulse Period
t_ILIL
Note 3
—
t_cyc
EEPROM Programming Time per Byte
t_EEPGM
10
—
ms
EEPROM Erasing Time per Byte
t_EBYTE
10
—
ms
EEPROM Erasing Time per Block
t_EBLOCK
10
—
ms
EEPROM Erasing Time per Bulk
t_EBULK
10
—
ms
EEPROM Programming Voltage Discharge Period
t_EEFPV
100
—
µs
16-Bit Timer (see Note 2)
Input Capture Pulse Width (see Note 3)
Input Capture Period
t_TH, t_TL
2
—
t_cyc
t_TLTL
Note 4
—
NOTES:
1. V_DD = 5.0 Vdc ± 10%, V_SS = 0 Vdc, T_A = –40 °C to +105 °C, unless otherwise noted.
2. The 2-bit timer prescaler is the limiting factor in determining timer resolution.
3. Refer to Table 16-3. Mode, Edge, and Level Selection and supporting note.
4. The minimum period t_TLTL or t_ILIL should not be less than the number of cycles it takes to execute the capture interrupt
service routine plus TBD t_cyc.
MC68HC08AS20 — Rev. 4.1
Freescale Semiconductor
Advance Information
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