參數(shù)資料
型號: S-35390A-T8T1
元件分類: 時鐘/數(shù)據(jù)恢復(fù)及定時提取
英文描述: REAL TIME CLOCK, PDSO8
封裝: TSSOP-8
文件頁數(shù): 16/48頁
文件大小: 542K
代理商: S-35390A-T8T1
S1C88816 TECHNICAL MANUAL
EPSON
15
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (I/O Memory Map)
5 PERIPHERAL CIRCUITS AND
THEIR OPERATION
The peripheral circuits of the S1C88816 is interfaced with the CPU by means of the memory mapped
I/O method. For this reason, just as with other memory access operations, peripheral circuits can be
controlled by manipulating I/O memory. Below is a description of the operation and control method for
each individual peripheral circuit.
5.1 I/O Memory Map
Table 5.1.1(a) I/O Memory map (00FF00H–00FF10H)
Address Bit
Name
00FF00 D7
D6
D5
D4
D3
D2
D1
D0
BSMD1
BSMD0
CEMD1
CEMD0
CE3
CE2
CE1
CE0
SR R/W
Function
Comment
General-purpose register *2
General-purpose register
Reserved register
10
0
1
0
R/W
1
0
00FF01 D7
D6
D5
D4
D3
D2
D1
D0
SPP7
SPP6
SPP5
SPP4
SPP3
SPP2
SPP1
SPP0
General-purpose register
Reserved register
0
R/W
10
00FF02 D7
D6
D5
D4
D3
D2
D1
D0
EBR
WT2
WT1
WT0
CLKCHG
OSCC
VDC1
VDC0
General-purpose register
CPU operating clock switch
OSC3 oscillation On/Off control
Operating mode selection
0
R/W
1
OSC3
On
0
OSC1
Off
VDC1
1
0
VDC0
×
1
0
High speed (VD1=3.3V)
Low power (VD1=1.3V)
Normal
(VD1=2.2V)
Operating mode
00FF10 D7
D6
D5
D4
D3
D2
D1
D0
LCCLK
LCFRM
DTFNT
LDUTY
SGOUT
General-purpose register
LCD dot font selection
LCD drive duty selection
General-purpose register
Constantry "0" when
being read
Reserved register
0
R/W
1
5 x 5 dots
1/16 duty
1
0
5 x 8 dots
1/32 duty
0
*1
Reserved register
*1 When 1/8 duty has been selected by mask option, setting of this register becomes invalid.
*2 Always set BSMD1 and BSMD0 to "0".
Reserved register
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