MAS9191EB MAS, MAS9191EB Datasheet - Page 7

• Manufacturer Part Number: MAS9191EB
• Description: EVALUATION BOARD
• Manufacturer: MAS

CONNECTOR DESCRIPTION
Connector name
SBUS
P4
P5
P2
This connector is closed when MAS9191A generates the clock to the uP. In this case
C50,C51, X2 and R23 should not be mounted.
Keypad connector. The keypad is a 4 x 3 matrix, which has the following truth table. The
outputs are driven by 74HC244.
MAS
1 and 2
shorted
1 and 2
1
2
3
4
5
open
Key
Pin
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
0
#
•
uP
10
9
8
7
6
Function
The SBUS interface. When using an external uP, leave the jumpers open and
connect the external uP to pins 1,2,3,4 and 5.
STB is the strobe signal input for the MAS9191A. Connect the pins together
when on-board uP is used.
SCL is the serial clock input for the MAS9191A. Connect the pins together
when on-board uP is used.
SRXD is the received data input for the MAS9191A. Connect the pins together
when on-board uP is used.
STXD is the transmit data output from MAS9191A. Connect the pins together
when on-board uP is used.
XINT interrupt line from MAS9191A. Connect the pins together when on-board
uP is used.
This connector has six pins, which are connected to micro controller port E. All
the pins are inputs for the micro controller. The pin can either be an analog
input for the uP internal A/D-converter or general purpose digital input.
Input PE2.
Input PE3.
Input PE4.
Input PE5.
Input PE6.
Input PE7.
uP uses 4.8MHz clock from MAS9191A.
uP uses crystal X2
Output
PA6
1
1
1
1
1
1
1
1
1
0
0
0
PA5
1
1
1
1
1
1
0
0
0
1
1
1
PA4
1
1
1
0
0
0
1
1
1
1
1
1
PA3
0
0
0
1
1
1
1
1
1
1
1
1
Input
PA2
1
1
0
1
1
0
1
1
0
1
1
0
PA1
1
0
1
1
0
1
1
0
1
1
0
1
DA9191EB.006
June 30,1997
PA0
0
1
1
0
1
1
0
1
1
0
1
1
7