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ST72411R датащи(PDF) 44 Page - STMicroelectronics

номер детали ST72411R
подробное описание детали  8-BIT MCU WITH SMARTCARD INTERFACE, LCD DRIVER, 8-BIT TIMER, SAFE RESET AND SUPPLY MONITORING
PDF  71 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72411R датащи(HTML) 44 Page - STMicroelectronics

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LCD DRIVER (Cont’d)
5.4.6 Register Description
CONTROL REGISTER (CR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:4 = Reserved,
Must always be cleared
Bit 3:1 = FS2:0
Frame Frequency selection
These bits allow to select the LCD frame frequen-
cy. It controls the ratio between the input clock
(fOSC/2) and the LCD output clock (fLCD). These
bits are set and cleared by software.
Bit 0 = LCDE
LCD enable
This bit is set and cleared by software.
0: LCD disabled
1: LCD enabled
While the LCD is disabled (LCDE bit cleared), all
Segment and Common pins are high impedance.
5.4.7 LCD RAM Description
The 16-byte LCD RAM is located in memory from
address 0140h to address 014Fh. Each bit of the
LCD RAM is mapped to one picture element of the
LCD panel. If a bit is set, the corresponding picture
element is switched on, otherwise it is switched
off.
After reset, the LCD RAM is not initialized and its
content is indeterminate.
7654
321
0
-
-
-
-
FS2
FS1
FS0
LCDE
Ration Divider
FS2
FS1
FS0
1/16384
1
1
1
1/8192
1
1
0
1/4096
1
0
1
1/2048
1
0
0
1/1024
0
1
1
1/512
0
1
0
1/256
0
0
1
1/128
0
0
0
Addr.
76543210
0140h
S7
S6
S5
S4
S3
S2
S1
S0
0141h
S15
S14
S13
S12
S11
S10
S9
S8
0142h
S23
S22
S21
S20
S19
S18
S17
S16
0143h
S31
S30
S29
S28
S27
S26
S25
S24
0144h
S7
S6
S5
S4
S3
S2
S1
S0
0145h
S15
S14
S13
S12
S11
S10
S9
S8
0146h
S23
S22
S21
S20
S19
S18
S17
S16
0147h
S31
S30
S29
S28
S27
S26
S25
S24
0148h
S7
S6
S5
S4
S3
S2
S1
S0
0149h
S15
S14
S13
S12
S11
S10
S9
S8
014Ah
S23
S22
S21
S20
S19
S18
S17
S16
014Bh
S31
S30
S29
S28
S27
S26
S25
S24
014Ch S7
S6
S5
S4
S3
S2
S1
S0
014Dh S15
S14
S13
S12
S11
S10
S9
S8
014Eh
S23
S22
S21
S20
S19
S18
S17
S16
014Fh
S31
S30
S29
S28
S27
S26
S25
S24



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