021426
D0D1D2D3D4D5D6D7CSRDWRCDCLKRESETGNDVCC
TxD
19
TxRDYTxCLKTxEMPT
15918
RxD
3
RxRDYRxCLKSYNDET
142516
DSRDTRCTSRTS
22241723
8251
111098765427132161726
D0D1D2D3D4D5D6D7A0CSRDWRSPENINTINTA
IR0IR1IR2IR3IR4IR5IR6IR7
1819202122232425
CAS0CAS1CAS2VCCGND
1213152814
8259
87654321232219212018
A0
D0
A1
D1
A2
D2
A3
D3
A4
D4
A5
D5
A6
D6
A7
D7
A8
A9GND
A10
W
VCC
G
E
910111314151617
12
24
6116
876543212122231920
D0
OUT0
D1
GATE0
D2
CLK0
D3
OUT1
D4
GATE1
D5
CLK1
D6
OUT2
D7
GATE2
CS
CLK2
RD
GND
WR
VCC
A0
A1
101191314151716181224
8253
11129819182
31020
Iout1Iout2RfbVrefILEWR2WR1
AGNDGNDVCC
lsbDI0DI1DI2DI3DI4DI5DI6
msbDI7
CSXfer
765416151413
117
DAC0832
4
f5
f74LS175
6
f74LS148优先编码器8脚为地（GND）板16脚为电源（VCC）74LS47七段译码器（共阳驱动）
CD4011（四二输入与非门）
7
f4010六同相驱动器
4011四2输入与非门
4012二4输入与非门
8
f4042四D触发器
9
fr