參數(shù)資料
型號(hào): HD40L4812
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位單片機(jī)(4位單片微計(jì)算機(jī))
文件頁(yè)數(shù): 94/98頁(yè)
文件大?。?/td> 621K
代理商: HD40L4812
HD404818 Series
94
During Transmit Clock Input
Item
Symbol
Pin(s)
SCK
Min
Typ
Max
Unit
t
cyc
/
t
subcyc
t
Scyc
Test Condition
Notes
Transmit clock cycle time
t
Scyc
1
1, 4
Transmit clock high and low
widths
t
SCKH
,
t
SCKL
t
SCKr
,
t
SCKf
SCK
0.5
1
Transmit clock rise and fall
times
SCK
200
ns
1
Serial output data delay time t
DSO
Serial input data setup time
SO
500
ns
1, 2
t
SSI
t
HSI
t
SCKHD
SI
300
ns
1
Serial input data hold time
SI
SCK
300
ns
t
cyc
/
t
subcyc
1
Transmit clock completion
detect time
Notes: 1. See figure 51.
2
See figure 52.
3. The transmit clock completion detect time is the high level period after 8 pulses of transmit
clocks are input. The serial interrupt request flag is not set if the next transmit clock is input
before the transmit clock completion detect time has passed.
4. t
is applied when the MCU is in subactive mode. t
subcyc
= 244.14
μ
s (for a 32.768-kHz crystal
oscillator).
1
1, 2,
3, 4
t
CPr
t
CPf
V
CC
– 0.3 V
0.3 V
OSC
1
t
CPH
t
CPL
1/f
CP
Figure 48 Oscillator Timing
0.9V
CC
0.1V
CC
INT
0
,
INT
1
t
IH
t
IL
Figure 49 Interrupt Timing
RESET
t
RSTf
t
RSTH
0.9V
CC
0.1V
CC
Figure 50 Reset Timing
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