Hardware manual

47
FUJITSU SEMICONDUCTOR CONFIDENTIAL
MB96630 Series
DS704-00012-1v0-E
(8) USART Timing
(V
CC
= AV
CC
= 2.7V to 5.5V, V
SS
= AV
SS
= 0V, T
A
= - 40°C to + 125°C, C
L
=50pF)
Parameter Symbol
Pin
name
Conditions
4.5V
≤
V
CC
<
5.5V
2.7V
≤
V
CC
<
4.5V
Unit
Min
Max
Min
Max
Serial clock cycle time t
SCYC
SCKn
Internal shift
clock mode
4t
CLKP1
- 4t
CLKP1
-
ns
SCK ↓ → SOT delay time
t
SLOVI
SCKn,
SOTn
- 20 + 20 - 30 + 30
ns
SOT → SCK ↑ delay time
t
OVSHI
SCKn,
SOTn
N×t
CLKP1
– 20
*
-
N
×t
CLKP1
– 30
*
-
ns
SIN → SCK ↑ setup time
t
IVSHI
SCKn,
SINn
t
CLKP1
+ 45
-
t
CLKP1
+ 55
-
ns
SCK ↑ → SIN hold time t
SHIXI
SCKn,
SINn
0 - 0 -
ns
Serial clock "L" pulse width t
SLSH
SCKn
External shift
clock mode
t
CLKP1
+ 10
-
t
CLKP1
+ 10
-
ns
Serial clock "H" pulse width t
SHSL
SCKn
t
CLKP1
+ 10
-
t
CLKP1
+ 10
-
ns
SCK ↓ → SOT delay time
t
SLOVE
SCKn,
SOTn
-
2t
CLKP1
+ 45
-
2t
CLKP1
+ 55
ns
SIN → SCK ↑ setup time
t
IVSHE
SCKn,
SINn
t
CLKP1
/2
+ 10
-
t
CLKP1
/2
+ 10
-
ns
SCK ↑ → SIN hold time
t
SHIXE
SCKn,
SINn
t
CLKP1
+ 10
-
t
CLKP1
+ 10
-
ns
SCK fall time t
F
SCKn
- 20 - 20
ns
SCK rise time t
R
SCKn
- 20 - 20
ns
Notes: • AC characteristic in CLK synchronized mode.
• C
L
is the load capacity value of pins when testing.
• Depending on the used machine clock frequency, the maximum possible baud rate can be limited by
some parameters. These parameters are shown in “MB96600 series HARDWARE MANUAL”.
• t
CLKP1
indicates the peripheral clock 1 (CLKP1), Unit: ns
• These characteristics only guarantee the same relocate port number.
For example, the combination of SCKn and SOTn_R is not guaranteed.
*: Parameter N depends on t
SCYC
and can be calculated as follows:
• If t
SCYC
= 2 × k × tCLKP1, then N = k, where k is an integer > 2
• If t
SCYC
= (2 × k + 1) × tCLKP1, then N = k + 1, where k is an integer > 1
Examples:
t
SCYC
N
4 × t
CLKP1
2
5 × t
CLKP1
, 6 × t
CLKP1
3
7 × t
CLKP1
, 8 × t
CLKP1
4
... ...