參數(shù)資料
型號(hào)： P83C661X2BBD
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 80C51 8-bit microcontroller family
中文描述： 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQFP44
封裝： 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-389-1, LQFP-44
文件頁(yè)數(shù)： 7/102頁(yè)
文件大?。?/td> 584K
代理商： P83C661X2BBD
Philips Semiconductors
Product data
P8xC660X2/661X2
80C51 8-bit microcontroller family
16 KB OTP/ROM, 512B
RAM, low voltage (2.7 to 5.5 V), low power, high speed (30/33
MHz), two 400KB I
2
C interfaces
2003 Oct 02
7
PIN DESCRIPTIONS
MNEMONIC
PIN NUMBER
TYPE
NAME AND FUNCTION
PLCC
LQFP
V
SS1
V
SS2
V
SS3
V
CC
22
16
I
Ground:
0 V reference.
34
28
I
Ground:
Additional ground pin (may be left open).
12
6
I
Ground:
Additional ground pin (may be left open).
44
38
I
Power Supply:
This is the power supply voltage for normal, idle, and power-down
operation.
P0.0–0.7
2
43–36
37–30
I/O
Port 0:
Port 0 is an open-drain, bidirectional I/O port. Port 0 pins that have 1s
written to them float and can be used as high-impedance inputs. Port 0 is also the
multiplexed low-order address and data bus during accesses to external program
and data memory. In this application, it uses strong internal pull-ups when emitting 1s.
P1.0–P1.7
2
2–9
40–44,
1–3
I/O
Port 1:
Port 1 is an 8-bit bidirectional I/O port with internal pull-ups on all pins.
Port 1 pins that have 1s written to them are pulled HIGH by the internal pull-ups and
can be used as inputs. As inputs, port 1 pins that are externally pulled LOW will
source current because of the internal pull-ups. (See DC Electrical Characteristics:
I
IL
).
Alternate functions for P8xC660X2/661X2 Port 1 include:
T2 (P1.0):
Timer/Counter 2 external count input/Clockout (see Programmable
Clock-Out)
T2EX (P1.1):
Timer/Counter 2 Reload/Capture/Direction Control
ECI (P1.2):
External Clock Input to the PCA
CEX0 (P1.3):
Capture/Compare External I/O for PCA module 0
CEX1 (P1.4):
Capture/Compare External I/O for PCA module 1
CEX2 (P1.5):
Capture/Compare External I/O for PCA module 2
SCL (P1.6):
I
2
C bus clock line (open drain)
SCL (P1.7):
I
2
C bus data line (open drain)
2
40
I/O
3
4
5
6
7
8
9
41
42
43
44
1
2
3
I
I
I/O
I/O
I/O
I/O
I/O
P2.0–P2.7
2
24–31
18–25
I/O
Port 2:
Port 2 is an 8-bit bidirectional I/O port with internal pull-ups. Port 2 pins that
have 1s written to them are pulled HIGH by the internal pull-ups and can be used
as inputs. As inputs, port 2 pins that are externally being pulled LOW will source
current because of the internal pull-ups. (See DC Electrical Characteristics: I
IL
).
Port 2 emits the high-order address byte during fetches from external program
memory and during accesses to external data memory that use 16-bit addresses
(MOVX @DPTR). In this application, it uses strong internal pull-ups when emitting
1s. During accesses to external data memory that use 8-bit addresses (MOV @Ri),
port 2 emits the contents of the P2 special function register.
P3.0–P3.7
2
11,
13–19
5, 7–13
I/O
Port 3:
Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. Port 3 pins that
have 1s written to them are pulled HIGH by the internal pull-ups and can be used
as inputs. As inputs, port 3 pins that are externally being pulled LOW will source
current because of the pull-ups. (See DC Electrical Characteristics: I
IL
). Port 3 also
serves the special features of the P8xC660X2/661X2, as listed below:
RxD (P3.0):
Serial input port
TxD (P3.1):
Serial output port
INT0 (P3.2):
External interrupt 0
INT1 (P3.3):
External interrupt 1
CEX3/T0 (P3.4):
Timer 0 external input; capture/compare external I/O for PCA
module 3
CEX4/T1 (P3.5):
Timer 1 external input; capture/compare external I/O for PCA
module 4
WR (P3.6):
External data memory write strobe
RD (P3.7):
External data memory read strobe
11
13
14
15
16
5
7
8
9
10
I
O
I
I
I
17
11
I
18
19
12
13
O
O
RST
2
10
4
I
Reset:
A HIGH on this pin for two machine cycles while the oscillator is running,
resets the device. An internal resistor to V
SS
permits a power-on reset using only
an external capacitor to V
CC
.
Second I
2
C bus clock line (open drain) (P8xC661X2)
Second I
2
C bus data line (open drain) (P8xC661X2)
SCL1
23
17
I/O
SDA1
1
39
I/O
相關(guān)PDF資料
PDF描述
P83C661X2FA 80C51 8-bit microcontroller family
P83C661X2 80C51 8-bit microcontroller family 16KB OTP/ROM. 512B RAM low voltage (2.7 to 5.5 V). low power. high speed (30/33 MHZ). two 400KB I2C interfaces
P83C660X2 80C51 8-bit microcontroller family 16KB OTP/ROM. 512B RAM low voltage (2.7 to 5.5 V). low power. high speed (30/33 MHZ). two 400KB I2C interfaces
P87C660X2 80C51 8-bit microcontroller family 16KB OTP/ROM. 512B RAM low voltage (2.7 to 5.5 V). low power. high speed (30/33 MHZ). two 400KB I2C interfaces
P87C661X2 80C51 8-bit microcontroller family 16KB OTP/ROM. 512B RAM low voltage (2.7 to 5.5 V). low power. high speed (30/33 MHZ). two 400KB I2C interfaces
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