ISP ORIENTATION

 
 

Pin description

 

JP1
PIN CPU DESCRIPTION VOLTAGE
PORT INT ANALOG DIGITAL COMM MIN. TYP. MAX.
1 GND GND GND
2 GND GND GND
3

ADC6


-0,5V - Vcc+0,5V
4

ADC7


-0,5V - Vcc+0,5V
5 PC0
ADC0


-0,5V - Vcc+0,5V
6 PC1
ADC1


-0,5V - Vcc+0,5V
7 PC2
ADC2


-0,5V - Vcc+0,5V
8 PC3
ADC3


-0,5V - Vcc+0,5V
9 PC4
ADC4
SDA
-0,5V - Vcc+0,5V
10 PC5
ADC5
SCL
-0,5V - Vcc+0,5V
11 GND GND for PIN12 GND
12 Vcc ¹ Internal 0,3A 3,3V LDO voltage regulator output,or Vcc input 1,8V 3,3V 5,5V ¹
13 PD0


RXD connected to TX pin of BTM-222 and level shifter -0,5V - Vcc+0,5V
14 PD1


TXD connected to RX pin of BTM-222 and level shifter -0,5V - Vcc+0,5V
15 PD2

INT0
connected to switch -0,5V - Vcc+0,5V
16 PD3

INT1
jumper to BTM-222 RTS available -0,5V - Vcc+0,5V
¹ The voltage must be 3,3V if BTM-222 is mounted.

 

JP2
PIN CPU DESCRIPTION VOLTAGE
PORT INT ANALOG DIGITAL COMM MIN. TYP. MAX.
17 Vin power supply for internal 3,3V LDO regulator 2V 5V 9V
18 GND power supply GND GND
19 PB6

XTAL1
connected to 3 state LED -0,5V - Vcc+0,5V
20 PB7

XTAL2
connected to RESET pin of BTM-222 -0,5V - Vcc+0,5V
21 PD4

T0/XCK
jumper to BTM-222 CTS available -0,5V - Vcc+0,5V
22 PD5

T1/OC0B

-0,5V - Vcc+0,5V
23 PD6
AIN0 OC0A

-0,5V - Vcc+0,5V
24 PD7
AIN1


-0,5V - Vcc+0,5V
25 PB0

CLKO/ICP1

-0,5V - Vcc+0,5V
26 PB1

OC1A

-0,5V - Vcc+0,5V
27 PB2

OC1B SS jumper to ISP RESET line available² -0,5V - Vcc+0,5V
28 PB3

OC2A MOSI connected to low side of level shifter -0,5V - Vcc+0,5V
29 PB4


MISO connected to low side of level shifter -0,5V - Vcc+0,5V
30 PB5


SCK connected to low side of level shifter -0,5V - Vcc+0,5V
31 RESET connected to low side of level shifter and switch -0,5V - Vcc+0,5V
32 GND GND GND
² If mounted, the BCA8 can use ISP to program another device.

 

ISP³
PIN CPU DESCRIPTION VOLTAGE
PORT INT ANALOG DIGITAL COMM MIN. TYP. MAX.
1 PB3

OC2A MOSI connected to high side of level shifter GND - Vin
2 Vin Internally connected to LDO voltage regulator input Vin
3 - Not connected -
4 GND ISP GND GND
5 RESET connected to high side of level shifter GND - Vin
6 PD0


RXD connected to high side of level shifter GND - Vin
7 PB5


SCK connected to high side of level shifter GND - Vin
8 PD1


TXD connected to high side of level shifter GND - Vin
9 PB4


MISO connected to high side of level shifter GND - Vin
10 - Not connected -
³ The ISP connector is a standard 10PIN ISP and work at Vin level. Pins 6 and 8 (normally GND) have been used for RXD and TXD signals, pin 10 is NC.