TMS370CXCX_09 Datasheet, PDF (2/64 Pages) Texas Instruments – 8-BIT MICROCONTROLLER

TMS370CxCx
8-BIT MICROCONTROLLER
SPNS040B – NOVEMBER 1995 – REVISED FEBRUARY 1997
Pin Descriptions
28 PINS
DIP and LCC
NAME
NO.
I / O†
DESCRIPTION
A0
14
A1
13
A2
11
A3
A4
10
9
I / O Port A is a general-purpose bidirectional I / O port.
A5
8
A6
7
A7
4
D3/SYSCLK
D4
D6
D7
2
26
3
I / O Port D is a general-purpose bidirectional I / O port. D3 is also configurable as SYSCLK.
12
INT1
15
I
External interrupt (non-maskable or maskable) / general-purpose input pin.
AN0 /E0
AN1 / E1
AN2 / E2
AN3 / E3
22
ADC2 module analog input (AN0 – AN3) or positive reference pins (AN1 – AN3).
23
24
I
25
Port E can be individually programmed as general-purpose input pins if not used as ADC2 analog input.
T1IC / CR
T1PWM
T1EVT
18
Timer1 input capture / counter reset input pin / general-purpose bidirectional pin.
17
I / O Timer1 PWM output pin / general-purpose bidirectional pin.
16
Timer1 external event input pin / general-purpose bidirectional pin.
SCITXD
SCIRXD
21
20
I/O
SCI module transmit data output / general-purpose bidirectional pin. (See Note 1)
SCI module receive data input pin / general-purpose bidirectional pin.
RESET
System reset bidirectional pin; as input pin, RESET initializes the microcontroller; as open-drain output,
27
I / O _{RESET indicates that an internal failure was detected by watchdog or oscillator fault circuit.}
MC
19
XTAL2 / CLKIN
5
XTAL1
6
I
Mode control input pin; programming EPROM when VPP is applied to MC pin.
I
Internal oscillator crystal input / External clock source input.
O Internal oscillator output for crystal.
VCC
1
Positive supply voltage
VSS
28
Ground reference
† _{I = input, O = output}
NOTE 1: The two SCI configuration pins are referenced to as SCI2.
2
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