It comes in different 40 pin packages such as DIP (dual inline package), QFP (quad flat package) and LLC(a leadless chip carrier). Pin configuration diagram of 8051 is shown below: Some manufacturers also introduced 20 pins 8051 with less number of input /output pins. As shown in the pi...
Then it turns off and "weak: pull- up continues remaining the port pin high. The quasi bi-directional port structure is shown as below. Figure 9–1. Quasi Bi-direction I/O Structure The default configuration of P0 is open-drain structure. To serve as an I/O port the external pull-up...
Analog Inputs Port 2 8-Bit Digital I / O Port 3 8-Bit Digital I / O Port 4 8-Bit Digital I / O Port 5 6-Bit Digital I / O MCL03833 User's Manual 1-3 10.99 Introduction C505L 1.1 Pin Configuration This section shows the pin configuration of the C505L in the P-MQFP-80 ...
Refer to the previous pin description for other pins. 8 TS8xC51Rx2 4188A–8051–10/02 Table 2. 64/68 Pin Packages Configuration Pin PLCC68 VSS VCC 51 17 P0.0 P0.1 15 14 P0.2 P0.3 12 11 P0.4 P0.5 9 6 P0.6 P0.7 P1.0 5 3 19 P1.1 P1.2 21 22 P1.3 P1.4 23 25 P1.5 P1.6...
8-Bit Microcontroller with 12K Bytes Flash AT89S53 0787B-B–12/97 4-217 Pin Configurations PDIP (T2) P1.0 (T2 EX) P1.1 P1.2 P1.3 (SS) P1.4 (MOSI) P1.5 (MISO) P1.6 (SCK) P1.7 RST (RXD) P3.0 (TXD) P3.1 (INT0) P3.2 (INT1) P3.3 (T0) P3.4 (T1) P3.5 (WR) P3.6 (...
C501 Port 2 EA/VPP 8-Bit Digital Ι /O ALE/PROG Port 3 PSEN 8-Bit Digital Ι /O MCL03217 Figure 1-2 Logic Symbol Semiconductor Group 1-2 Introduction C501 1.1 Pin Configuration This section shows the pin configuration of the C501 in the P-LCC-44, P-DIP-40, and P-MQFP-44 ...
This configuration is illustrated in Figure 5-2. When using an off-chip oscillator, the duty cycle becomes important. As near as possible, a 50% duty cycle should be supplied. XTAL1 This pin is the input to an inverting high-gain amplifier. It also serves as the input for an off-ch...
Set to capture on negative transitions on T2EX pin if EXEN2=1. Reset Value = 0000 0000b Bit addressable 4289A–8051–09/03 39 Table 25. T2MOD Register T2MOD - Timer 2 Mode Control Register (C9h) 7654321 - - - - - - T2OE Bit Number 7 Bit Mnemonic Description - Reserved The ...
The watchdog can be configured to output a reset pulse on the external Reset pin. Each 8-bit I/O port of the AT89LP52 can be independently configured in one of four operating modes. In quasi-bidirectional mode, the port operates as in the classic 8051. In input-only mode, the port ...
12 Cycle C505 44 Pin, CAN C515 80 Pin, CAN C800 40 MHz, 12 Cycle C868 28/38 Pin, Lowest Cost XC800 26 MHz, Dual Cycle XC86x 38 Pin, LIN XC88x 48/64 Pin, CAN, LIN Series with eFlash members 3 8-bit Microcontrollers Overview ...