參數(shù)資料
型號(hào)： TS80C32X2-VCEB
廠商： TEMIC SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, 40 MHz, MICROCONTROLLER, PDIP40
封裝： VQFP-44
文件頁(yè)數(shù)： 45/56頁(yè)
文件大?。?/td> 689K
代理商： TS80C32X2-VCEB
5
Rev. C - Aug. 31, 1999
TS80C52X2
Table 3. Pin Description for 40/44 pin packages
MNEMONIC
PIN NUMBER
TYPE
NAME AND FUNCTION
DIL
LCC
VQFP 1.4
VSS
20
22
16
I
Ground: 0V reference
Vss1
1
39
I
Optional Ground: Contact the Sales Ofce for ground connection.
VCC
40
44
38
I
Power Supply: This is the power supply voltage for normal, idle and power-
down operation
P0.0-P0.7
39-32
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 oat and can be used as high impedance inputs.Port 0 pins must
be polarized to Vcc or Vss in order to prevent any parasitic current consumption.
Port 0 is also the multiplexed low-order address and data bus during access to
external program and data memory. In this application, it uses strong internal
pull-up when emitting 1s. Port 0 also inputs the code bytes during EPROM
programming. External pull-ups are required during program verication during
which P0 outputs the code bytes.
P1.0-P1.7
1-8
2-9
40-44
1-3
I/O
Port 1: Port 1 is an 8-bit bidirectional I/O port with internal pull-ups. 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. Port 1 also receives the low-order
address byte during memory programming and verication.
Alternate functions for Port 1 include:
1
2
40
I/O
T2 (P1.0): Timer/Counter 2 external count input/Clockout
2
3
41
I
T2EX (P1.1): Timer/Counter 2 Reload/Capture/Direction Control
P2.0-P2.7
21-28
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 pulled low will
source current because of the internal pull-ups. 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 emitting 1s. During accesses to external data memory
that use 8-bit addresses (MOVX @Ri), port 2 emits the contents of the P2 SFR.
Some Port 2 pins receive the high order address bits during EPROM programming
and verication: P2.0 to P2.4
P3.0-P3.7
10-17
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 pulled low will
source current because of the internal pull-ups. Port 3 also serves the special
features of the 80C51 family, as listed below.
10
11
5
I
RXD (P3.0): Serial input port
11
13
7
O
TXD (P3.1): Serial output port
12
14
8
I
INT0 (P3.2): External interrupt 0
13
15
9
I
INT1 (P3.3): External interrupt 1
14
16
10
I
T0 (P3.4): Timer 0 external input
15
17
11
I
T1 (P3.5): Timer 1 external input
16
18
12
O
WR (P3.6): External data memory write strobe
17
19
13
O
RD (P3.7): External data memory read strobe
Reset
9
10
4
I
Reset: A high on this pin for two machine cycles while the oscillator is running,
resets the device. An internal diffused resistor to VSS permits a power-on reset
using only an external capacitor to VCC.
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