參數(shù)資料
型號(hào): UPD78218AGC
廠商: NEC Corp.
元件分類(lèi): 8位微控制器
英文描述: 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述: 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存
文件頁(yè)數(shù): 45/66頁(yè)
文件大?。?/td> 510K
代理商: UPD78218AGC
45
μ
PD78217A, 78218A
WAIT hold time from ASTB
t
HSTWT
No. of external waits = 1
174
ns
WAIT
delay time from ASTB
t
DSTWTH
No. of external waits = 1
273
ns
WAIT
input time from RD
t
DRWTL
22
ns
WAIT hold time from RD
t
HRWT
No. of external waits = 1
87
ns
WAIT
delay time from RD
t
DRWTH
No. of external waits = 1
186
ns
Data input time from WAIT
t
DWTID
62
ns
WR
delay time from WAIT
t
DWTW
154
ns
RD
delay time from WAIT
t
DWTR
72
ns
WAIT input time from WR
(At refresh disabled)
WAIT hold time
t
HWWT1
No. of external waits = 1
87
ns
from WR
t
HWWT2
No. of external waits = 1
5
ns
WAIT
delay
t
DWWTH1
No. of external waits = 1
186
ns
time from WR
t
DWWTH2
No. of external waits = 1
104
ns
REFRQ
delay time from RD
t
DRRFQ
154
ns
REFRQ
delay time from WR
t
DWRFQ
72
ns
REFRQ low-level width
t
WRFQL
120
ns
ASTB
delay time from REFRQ
t
DRFQST
280
ns
READ/WRITE OPERATION (2/2)
Refresh disabled
Refresh enabled
Refresh disabled
Refresh enabled
PARAMETER
SYMBOL
TEST CONDITIONS
MIN.
MAX.
UNIT
t
DWWTL
22 ns
Remarks 1.
The values in the above table are based on "f
XX
= 12 MHz and C
L
= 100 pF".
For a parameter with a dot (
) in the SYMBOL column, refer to "
t
CYX
DEPENDENT BUS TIMING
DEFINITION
" as well.
2.
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