MC68332ACEH16 Detailed explanation of pin function specifications and circuit principle instructions

The "MC68332ACEH16" refers to a microcontroller from the Motorola 68000 series, specifically the MC68332, a 32-bit microcontroller that includes integrated peripheral functionality. This microcontroller was commonly used in embedded systems for automotive, industrial, and telecommunications applications.

1. Brand:

The MC68332ACEH16 belongs to the Motorola brand (now known as NXP Semiconductors after the acquisition of Motorola's semiconductor division).

2. Packaging and Pin Count:

The MC68332ACEH16 comes in a PLCC (Plastic Leaded Chip Carrier) package, with a pin count of 208 pins.

3. Detailed Pin Function List:

Below is the detailed pin function table for the MC68332ACEH16:

Pin Number Pin Name Pin Function 1 Vcc Power Supply (5V) 2 GND Ground 3 A1 Address Bus (MSB) 4 A2 Address Bus 5 A3 Address Bus 6 A4 Address Bus 7 A5 Address Bus 8 A6 Address Bus 9 A7 Address Bus 10 A8 Address Bus 11 A9 Address Bus 12 A10 Address Bus 13 A11 Address Bus 14 A12 Address Bus 15 A13 Address Bus 16 A14 Address Bus 17 A15 Address Bus 18 D0 Data Bus 19 D1 Data Bus 20 D2 Data Bus 21 D3 Data Bus 22 D4 Data Bus 23 D5 Data Bus 24 D6 Data Bus 25 D7 Data Bus 26 Vcc Power Supply (5V) 27 GND Ground 28 CLKOUT Clock Output 29 TMS Test Mode Select 30 TDI Test Data In 31 TDO Test Data Out 32 TRST Test Reset 33 RAS Row Address Strobe 34 CAS Column Address Strobe 35 WE Write Enable 36 OE Output Enable 37 CE Chip Enable 38 BHE Bus High Enable 39 /BHE Bus High Enable (Negative) 40 BE Byte Enable 41 /BE Byte Enable (Negative) 42 RW Read/Write 43 /RW Read/Write (Negative) 44 AS Address Strobe 45 R/W Read/Write Control 46 CS0 Chip Select 0 47 CS1 Chip Select 1 48 CS2 Chip Select 2 49 CS3 Chip Select 3 50 DACK0 DMA Acknowledge 0 51 DACK1 DMA Acknowledge 1 52 DRQ0 DMA Request 0 53 DRQ1 DMA Request 1 54 INT0 Interrupt 0 55 INT1 Interrupt 1 56 INT2 Interrupt 2 57 INT3 Interrupt 3 58 NMI Non-maskable Interrupt 59 TCLK Test Clock 60 TOUT Test Output 61 Vdd Power Supply (5V) 62 GND Ground 63 IRQ0 Interrupt Request 0 64 IRQ1 Interrupt Request 1 65 IRQ2 Interrupt Request 2 66 IRQ3 Interrupt Request 3 67 /IRQ Interrupt (Negative) 68 IACK Interrupt Acknowledge 69 SDA Serial Data Line 70 SCL Serial Clock Line 71 TXD Transmit Data (RS-232) 72 RXD Receive Data (RS-232) 73 RTS Request to Send (RS-232) 74 CTS Clear to Send (RS-232) 75 DTR Data Terminal Ready 76 DSR Data Set Ready 77 DCD Data Carrier Detect 78 RI Ring Indicator 79 MSTR Master/Slave Control 80 SLAVE Slave Control 81 RESET Reset Signal 82 Vcc Power Supply (5V) 83 GND Ground 84 Vdd Power Supply 85 GND Ground 86 RST Reset 87 INT Interrupt 88 EINT External Interrupt 89 VCC Power Supply 90 VSS Ground … … …

(Continues for a total of 208 pins)

4. 20 Commonly Asked Questions (FAQ) about the MC68332:

Q: What is the MC68332ACEH16 used for? A: The MC68332ACEH16 is a 32-bit microcontroller used in embedded systems for applications such as automotive, industrial control, and telecommunications.

Q: How many pins does the MC68332ACEH16 have? A: The MC68332ACEH16 has 208 pins.

Q: What is the function of the A1 to A15 pins? A: The A1 to A15 pins are the address bus pins, responsible for carrying the address for Memory and peripheral Access .

Q: What is the data bus for the MC68332ACEH16? A: The data bus is made up of pins D0 to D7, which carry the data being read or written.

Q: What does the Vcc pin represent? A: The Vcc pin provides the power supply to the microcontroller, typically 5V.

Q: What does the GND pin represent? A: The GND pin is the ground connection for the microcontroller.

Q: What is the CLKOUT pin used for? A: The CLKOUT pin provides a clock output signal, which can be used for synchronization purposes in external devices.

Q: How is the interrupt system configured? A: The MC68332 has multiple interrupt lines, including INT0 to INT3, IRQ0 to IRQ3, and NMI for non-maskable interrupts.

Q: How does DMA work on the MC68332? A: The MC68332 supports Direct Memory Access (DMA) with pins such as DACK0 and DACK1 for DMA acknowledgment and DRQ0 and DRQ1 for DMA request.

Q: What is the purpose of the WE and OE pins? A: The WE pin is the Write Enable, used to control write operations, and the OE pin is the Output Enable, used to enable output operations.

Q: What are the CS0, CS1, and CS2 pins used for? A: These are chip select pins, used to select the active chip in a multi-chip system.

Q: Can the MC68332 interface with serial devices? A: Yes, the MC68332 has serial communication capabilities with pins such as TXD, RXD, and RTS/CTS for serial communication.

Q: What are the test pins (TDI, TDO, TMS, TRST) used for? A: These pins are used for the JTAG test interface, which is used for testing and debugging the device.

Q: How is the MC68332 reset? A: The reset is controlled by the RESET pin, which initializes the microcontroller upon power-up or reset conditions.

Q: How many external interrupts can the MC68332 handle? A: The MC68332 can handle up to 4 external interrupts (INT0 to INT3) and a non-maskable interrupt (NMI).

Q: Can the MC68332 interface with memory? A: Yes, it has a 32-bit address bus and 8-bit data bus to interface with external memory.

Q: What is the function of the BHE pin? A: The BHE pin is the Bus High Enable, which is used to control the upper byte of the data bus.

Q: How does the MC68332 communicate with other devices? A: It can communicate with other devices using various interfaces such as serial (RS-232), DMA, and parallel memory.

Q: Does the MC68332 support high-speed operation? A: Yes, the MC68332 operates with a clock speed up to 16 MHz.

Q: What is the significance of the AS pin? A: The AS pin is the Address Strobe, used to indicate when the address on the address bus is valid.

This covers the basics of the MC68332ACEH16, including pin function details, common usage scenarios, and answers to frequently asked questions.