MC68HC08BD24 Datasheet, PDF (238/244 Pages) Motorola, Inc – HCMOS Microcontroller Unit

19.12 DDC12AB Timing
SDA
SCL
tHD.STA tLOW tHIGH tSU.DAT tHD.DAT
tSU.STA
tSU.STO
19.12.1 DDC12AB Interface Input Signal Timing
Characteristic
Symbol
Min
Max
Unit
START condition hold time
t_HD.STA
2
—
t_CYC
Clock low period
t_LOW
4
—
t_CYC
Clock high period
t_HIGH
4
—
t_CYC
Data set-up time
t_SU.DAT
250
—
ns
Data hold time
t_HD.DAT
0
—
ns
START condition set-up time
(for repeated START condition only)
t_SU.STA
2
—
t_CYC
STOP condition set-up time
t_SU.STO
2
—
t_CYC
NOTES:
1. V_DD = 5.0 Vdc ± 10%, V_SS = 0 Vdc; timing shown with respect to 20% V_DD and 70% V_DD, unless otherwise noted.
19.12.2 DDC12AB Interface Output Signal Timing
Characteristic
Symbol
Min
Max
Unit
SDA/SCL rise time⁽²⁾
t_R
—
1
µs
SDA/SCL fall time
t_F
—
300
ns
Data set-up time
t_SU.DAT
t_LOW
—
ns
Data hold time
t_HD.DAT
0
—
ns
NOTES:
1. V_DD = 5.0 Vdc ± 10%, V_SS = 0 Vdc; timing shown with respect to 20% V_DD and 70% V_DD, unless otherwise noted.
2. With 200pF loading on the SDA/SCL pins.
Technical Data
238
MC68HC08BD24 — Rev. 1.1
Freescale Semiconductor