Merge pull request #5451 from clawgrip/patch-3

ml20.cpp: Add small note (mw)
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ajrhacker 2019-08-07 10:50:48 -04:00 committed by GitHub
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Access control device with dot-matrix display Access control device with dot-matrix display
ML20/232 ML20/232
____________________________________________________ ____________________________________________________
| ________ ________ ________ ______ __ | | ________ ________ ________ ______ __ |
| |74HC04N|M74HC139B1 |__DP1__| |_XT1_| : CN7 | | |74HC04N|M74HC139B1 |__DP1__| |_XT1_| : CN7 |
|__ _______________ ____________ JP2 | |__ _______________ ____________ JP2 |
||C||IC4 M27C512 || |D70320L-8 | (CN4)__ | ||C||IC4 M27C512 || |D70320L-8 | (CN4)__ |
||N||_____________|| |NEC V25 | ______ |C| | ||N||_____________|| |NEC V25 | ______ |C| |
||2|_______________ | | |BATT | |N| | ||2|_______________ | | |BATT | |N| |
||_||KM681000CLP-7L| | | |_____| |6| | ||_||KM681000CLP-7L| | | |_____| |6| |
|__ |______________| |___________| o <- LED | |__ |______________| |___________| o <- LED |
||C| ________ ________ .. <- JP1 | ||C| ________ ________ .. <- JP1 |
||N||_M6242B_| MAX693CPE __ | ||N||_M6242B_| MAX693CPE __ |
||8| ________ |C|__ | ||8| ________ |C|__ |
| ULN2003A |N|| || | XT2 ULN2003A |N|| ||
| :<-JP4 ________ ____ |3||_|<- LM2575T | :<-JP4 ________ ____ |3||_|<- LM2575T
| ________ SN74HC05N TLP504A |_| | | ________ SN74HC05N TLP504A |_| |
|__ MAX232CPE | |__ MAX232CPE :<-JP8 |
|| | MEISEI ________ | || | MEISEI ________ |
|| | ________ P12 P12 MAX232CPE | || | ________ P12 P12 MAX232CPE |
||_| 26LS32ACN __ | ||_| 26LS32ACN __ |
| :: <-JP5 |F|| | :: <-JP5 |F||
| ____________ ________ ________ |U|| | ____________ ________ ________ |U||
| |___CN10____| |_CN11__| |_______| ________ |S|| | |___CN10____| |_CN11__| |_______| ________ |S||
| |___________| |_____ | |_CN9___| |_CN1___| E | | |___________| |_____ | |_CN9___| |_CN1___| E |
|___________________________________________________| |___________________________________________________|
XT1 = 16.000 MHz XT1 = 16.000 MHz
DP1 = 8 dipswitches XT2 = S873
CN4 = Speaker DP1 = 8 dipswitches
CN9 = RS232 CN4 = Speaker
CN8 = Power Out CN9 = RS232
CN6 = Magnetic stripe reader CN8 = Power Out
CN2 = Display (dot-matrix, 2 lines x 16 characters, 5x7 each character) CN6 = Magnetic stripe reader
CN7 = Keypad CN2 = Display (dot-matrix, 2 lines x 16 characters, 5x7 each character)
CN7 = Keypad
Display = Hyundai HC16203-A (Hitachi HD44780A00 based).
Status: Status:
- Shows current date and time, then presumably waits for keypad input - Shows current date and time, then presumably waits for keypad input