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參數(shù)資料
| 型號(hào)： | ST9293 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 48K ROM HCMOS MCUs WITH ON SCREEN DISPLAY AND A/D CONVERTER |
| 中文描述： | 48,000光盤HCMOS微控制器與屏幕顯示和A / D轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 3/4頁(yè) |
| 文件大小： | 66K |
| 代理商： | ST9293 |
I/O PORT
Name
Function
Alternate Function
Pin
Assignment
Port.bit
9293J
P0.0
I/O
12
P0.1
I/O
11
P0.2
I/O
10
P0.3
I/O
9
P0.4
I/O
8
P0.5
I/O
7
P0.6
I/O
6
P0.7
I/O
5
P2.0
INT6
I
External Interrupt 6
39
P2.1
INT7
I
External Interrupt 7
40
P2.2
INT0
I
External Interrupt 0
41
Table 1-1. ST9293 I/O Port Alternate Function Summary
1.2 PIN DESCRIPTION
VSYNC
. Vertical Synch.Vertical video synchroni-
sation input to OSD. Positive or negative polarity.
HSYNC
. Horizontal Synch.Horizontal video syn-
chronisation input to OSD. Positive or negative po-
larity.
PLLF
. PLL Filter input.Filter input for the OSD for
PLL feed-back.
PLLR
. PLL Resistor connection pin.For resistor
connection to select the PLL gain adjust.
RESET
. Reset (input, active low).The ST9 is ini-
tialised by the Reset signal. With the deactivation
of RESET, program execution begins from the Pro-
gram memory location pointed to by the vector
contained in program memory locations 00h and
01h.
OSCIN, OSCOUT
. Oscillator (input and output).
These pins connect a parallel-resonant crystal
(24MHz maximum), or an external source to the
on-chip clock oscillator and buffer. OSCIN is the in-
put of the oscillator inverter and internal clock gen-
erator; OSCOUT is the output of the oscillator
inverter.
AV
DD
. Analog V
DD
of PLL. This pin must be tied to
V
DD
externally to the ST9293.
V
DD
. Main Power Supply Voltage (5V
±
10%)
V
SS
, V
SS2
. Digital Circuit Ground, these pins must
be connected together externally to the ST9293.
P0.0-P0.7, P2.0-P2.7, P3.3-P3.7, P4.5-P4.7,
P5.0-P5.6
I/O Port Lines (Input/Output, TTL or
CMOS compatible).31 lines grouped into I/O
ports, bit programmable under program control as
general purpose I/O or as Alternate functions (see
next section).
P3.3 and P3.4 are true 12V open drain outputs
when set in output mode.
1.2.1 I/O Port Alternate Functions.
Each pin of the I/O ports of the ST9293 may as-
sume software programmable Alternative Func-
tions as shown in the Pin Configuration Drawings.
Table 1 shows the Functions allocated to each I/O
Port pin.
ST9293
3/4
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