參數(shù)資料
型號(hào): ATJ2073
廠商: Electronic Theatre Controls, Inc.
英文描述: The ATJ2073 is a single-chip highly-intergrated digital music system solution for devices such as dedicated audio players, PDAs, and cell phones
中文描述: 在ATJ2073是一種單芯片高intergrated數(shù)字音樂(lè)的設(shè)備系統(tǒng),如專用的音頻播放器,PDA和手機(jī)解決方案
文件頁(yè)數(shù): 39/45頁(yè)
文件大?。?/td> 690K
代理商: ATJ2073
(6) Keyboard interface parameter
ATJ2073
Data Sheet
Page 39 of 45
Actions Semiconductor Co.,LTD
Parameter
Symbol Condition
MIN. MAX. Unit
KEYOUT (7:0) low-level width
tSCAN
Debounce time=2.5ms
130
u
s
Voltage stabilization time
(KEYOUT n KEYOUT (n+1))
tKWAIT Debounce time=2.5ms
0
u
s
Key scan interval time
tKI
Debounce time=2.5ms
130
u
s
Key input delay time (from KEYOUT
n)
tKS
Debounce time=2.5ms
0
u
s
Key input hold time (from KEYOUT
n)
tKH
Debounce time=2.5ms
0
u
s
Remarks
1.
KEYOUT(7:0) is multiplexed with GIOF(7:0); KEYIN(3:0) is multiplexed with GIOD(7:4); KEYIN(11:4) is
multiplexed with GIOE(7:0)
2.
Keyscan Debouncing time is set thru Bit(2:0) of the MFP Configuration1 Register[0xB1h]
3.
n = 0 to 7
(a) Keyboard scan parameter 1
KEYOUT
n
(output)
KEYOUT
(n+1)
(output)
t
SCAN
t
KWAIT
Remark n=0 to 6
(b) Keyboard scan parameter 2
KEYOUT
0
(output)
KEYOUT
1
(output)
t
KI
t
KWAIT
ss
ss
ss
KEYOUT
7
(output)
(c) Keyboard port parameter
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