MOTOROLA
14-4
MC68HC05T16
ELECTRICAL SPECIFICATIONS
14
14.6
M-Bus Interface Timing
Table 14-4 M-Bus Interface Input Signal Timing
(V
DD
=5.0Vdc
±
10%, V
SS
=0Vdc, temperature range=0 to 70
°
C)
PARAMETERS
SYMBOL
MINIMUM
MAXIMUM
UNIT
START condition hold time
t
HD.STA
2
–
t
CYC
START condition setup time
(for repeated START condition only)
t
SU.STA
2
–
t
CYC
SCL clock low period
t
LOW
4.7
–
t
CYC
SCL clock high period
t
HIGH
4.0
–
t
CYC
SDA data setup time
t
SU.DAT
250
–
µ
s
SDA data hold time
t
HD.DAT
0
–
µ
s
STOP condition setup time
t
SU.STO
2
–
t
CYC
Table 14-5 M-Bus Interface Output Signal Timing
(V
DD
=5.0Vdc
±
10%, V
SS
=0Vdc, temperature range=0 to 70
°
C)
CHARACTERISTICS
SYMBOL
MINIMUM
MAXIMUM
UNIT
START condition hold time
t
HD.STA
8
–
t
CYC
START condition setup time
(for repeated START condition only)
t
SU.STA
10
–
t
CYC
SCL clock low period
t
LOW
11
–
t
CYC
SCL clock high period
t
HIGH
11
–
t
CYC
SDA/SCL rise time (see note 1)
t
R
–
1
µ
s
SDA/SCL fall time (see note 1)
t
F
–
300
ns
SDA data setup time
t
SU.DAT
t
LOW
-2t
CYC
–
µ
s
SDA data hold time
t
HD.DAT
170
–
ns
STOP condition setup time
t
SU.STO
10
–
t
CYC
Note:
1. With 200pF loading on the SDA/SCL pins
Figure 14-1 M-Bus Timing Diagram
SDA
SCL
t
HIGH
t
HD.STA
t
LOW
t
SU.DAT
t
HD.DAT
t
SU.STA
t
SU.STO
t
R
t
F
TPG
118
Summary of Contents for MC68HC05T16
Page 2: ......
Page 14: ...MOTOROLA vi MC68HC05T16 THIS PAGE LEFT BLANK INTENTIONALLY TPG 12 ...
Page 16: ...MOTOROLA viii MC68HC05T16 THIS PAGE LEFT BLANK INTENTIONALLY TPG 14 ...
Page 18: ...MOTOROLA x MC68HC05T16 THIS PAGE LEFT BLANK INTENTIONALLY TPG 16 ...
Page 54: ...MOTOROLA 5 12 MC68HC05T16 TIMERS 5 THIS PAGE LEFT BLANK INTENTIONALLY TPG 52 ...
Page 64: ...MOTOROLA 6 10 MC68HC05T16 M BUS SERIAL INTERFACE 6 THIS PAGE LEFT BLANK INTENTIONALLY TPG 62 ...
Page 110: ...MOTOROLA 12 4 MC68HC05T16 LOW POWER MODES 12 THIS PAGE LEFT BLANK INTENTIONALLY TPG 108 ...
Page 116: ...MOTOROLA 13 6 MC68HC05T16 OPERATING MODES 13 THIS PAGE LEFT BLANK INTENTIONALLY TPG 114 ...