TMS370CX2X Datasheet, PDF (2/60 Pages) Texas Instruments – 8-BIT MICROCONTROLLER

TMS370Cx2x
8-BIT MICROCONTROLLER
SPNS018C – FEBRUARY 1993 – REVISED FEBRUARY 1997
Pin Descriptions
NAME
PIN
DIP
(40)
PLCC
(44)
TYPE†
DESCRIPTION
A0
18
20
A1
17
19
A2
16
18
A3
A4
15
17
14
16
I/O Port A pins are general-purpose bidirectional I/O ports.
A5
13
15
A6
11
13
A7
10
12
B0
39
44
B1
40
1
B2
1
2
B3
B4
2
3
3
4
I/O Port B pins are general-purpose bidirectional I/O ports.
B5
23
26
B6
24
27
B7
25
28
C0
4
5
I/O Port C pin is a general-purpose bidirectional I/O port.
D3
21
23
D4
20
22
D5
35
40
I/O Port D pins are general-purpose bidirectional I/O ports. D3 is also configurable as SYSCLK.
D6
22
24
D7
19
21
INT1
INT2
INT3
6
7
I
External interrupt (non-maskable or maskable) general-purpose input pin
7
8
I/O External maskable interrupt input/general-purpose bidirectional pin
8
9
I/O External maskable interrupt input/general-purpose bidirectional pin
T1IC/CR
T1PWM
T1EVT
31
36
30
35
29
34
Timer 1 input-capture/counter-reset input pin/general-purpose bidirectional pin
I/O Timer 1 pulse width modulation output pin/general-purpose bidirectional pin
Timer 1 external event-input pin/general-purpose bidirectional pin
SPISOMI
SPISIMO
SPICLK
SCITXD
SCIRXD
SCICLK
28
32
27
31
26
30
38
43
37
42
36
41
SPI slave output pin, master input pin/general-purpose bidirectional pin
I/O SPI slave input pin, master output pin/general-purpose bidirectional pin
SPI bidirectional serial clock pin/general-purpose bidirectional pin
SCI transmit data output pin/general-purpose bidirectional pin‡
I/O SCI receive data input pin/general-purpose bidirectional pin
SCI bidirectional serial clock pin/general-purpose bidirectional pin
RESET
System reset bidirectional pin; as input, RESET initializes microcontroller; as open-drain
5
6
I/O output, RESET indicates an internal failure was detected by the watchdog or oscillator fault
circuit.
MC
34
39
XTAL2/CLKIN 33
38
XTAL1
32
37
I
Mode control-input pin. MC enables the EEPROM write-protection override (WPO) mode and
EPROM VPP.
I
Internal oscillator crystal input/external clock source input
O
Internal oscillator output for crystal
VCC
9
10
Positive supply voltage
VSS
12
14
Ground reference
–
11
NC
–
25
–
29
No connections
–
33
† _{I = input, O = output}
‡ _{The three-pin configuration SCI is referred to as SCI1.}
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