MC68B912B32 Datasheet PDF - Motorola Semiconductors
| Part Number | MC68B912B32 | |
| Description | 16-Bit Microcontroller | |
| Manufacturers | Motorola Semiconductors | |
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MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
Order this document
by MC68HC912B32TS/D
MC68HC912B32
Technical Summary
16-Bit Microcontroller
1 Introduction
The MC68HC912B32 microcontroller unit (MCU) is a 16-bit device composed of standard on-chip pe-
ripherals including a 16-bit central processing unit (CPU12), 32-Kbyte flash EEPROM, 1-Kbyte RAM,
768-byte EEPROM, an asynchronous serial communications interface (SCI), a serial peripheral inter-
face (SPI), an 8-channel timer and 16-bit pulse accumulator, an 8-bit analog-to-digital converter (ADC),
a four-channel pulse-width modulator (PWM), and a J1850-compatible byte data link communications
module (BDLC). The chip is the first 16-bit microcontroller to include both byte-erasable EEPROM and
flash EEPROM on the same device. System resource mapping, clock generation, interrupt control and
bus interfacing are managed by the Lite integration module (LIM). The MC68HC912B32 has full 16-bit
data paths throughout, however, the multiplexed external bus can operate in an 8-bit narrow mode so
single 8-bit wide memory can be interfaced for lower cost systems.
1.1 Features
• 16-Bit CPU12
— Upward Compatible with M68HC11 Instruction Set
— Interrupt Stacking and Programmer’s Model Identical to M68HC11
— 20-Bit ALU
— Instruction Queue
— Enhanced Indexed Addressing
— Fuzzy Logic Instructions
• Multiplexed Bus
— Single Chip or Expanded
— 16/16 Wide or 16/8 Narrow Modes
• Memory
— 32-Kbyte Flash EEPROM with 2-Kbyte Erase-Protected Boot Block
— 768-B yte EEPROM
— 1-Kbyte RAM with Single-Cycle Access for Aligned or Misaligned Read/Write
• 8-Channel, 8-Bit Analog-to-Digital Converter
• 8-Channel Timer
— Each Channel Fully Configurable as Either Input Capture or Output Compare
— Simple PWM Mode
— Modulo Reset of Timer Counter
• 16-Bit Pulse Accumulator
— External Event Counting
— Gated Time Accumulation
• Pulse-Width Modulator
— 8-Bit, 4-Channel or 16-Bit, 2-Channel
— Separate Control for Each Pulse Width and Duty Cycle
This document contains information on a new product. Specifications and information herein are subject to change without notice.
© MOTOROLA INC., 1997
M
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1.3 MC68HC912B32 Block Diagram
VFP
BKGD
EXTAL
XTAL
RESET
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
32-KBYTE FLASH EEPROM
1-KBYTE RAM
768-BYTE EEPROM
CPU12
SMODN / TAGHI
SINGLE-WIRE
BACKGROUND
DEBUG MODULE
PERIODIC INTERRUPT
COP WATCHDOG
CLOCK MONITOR
BREAK POINTS
XIRQ
IRQ/VPP
R/W
LSTRB / TAGLO
ECLK
IPIPE0 / MODA
IPIPE1 / MODB
DBE
LITE
INTEGRATION
MODULE
(LIM)
MULTIPLEXED ADDRESS/DATA BUS
DDRA
PORT A
DDRB
PORT B
ATD
CONVERTER
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
IOC0
IOC1
IOC2
TIMER AND
IOC3
PULSE
OC7 IOC4
ACCUMULATOR
IOC5
IOC6
PAI
SCI
RxD
TxD
I/O
I/O
I/O
SDI/MISO
SDO/MOSI
SPI SCK
CS/SS
PWM
PW0
PW1
PW2
PW3
I/O
I/O
I/O
I/O
I/O
VRH
VRL
VDDA
VSSA
VRH
VRL
VDDA
VSSA
PAD0
PAD1
PAD2
PAD3
PAD4
PAD5
PAD6
PAD7
PT0
PT1
PT2
PT3
PT4
PT5
PT6
PT7
PS0
PS1
PS2
PS3
PS4
PS5
PS6
PS7
PP0
PP1
PP2
PP3
PP4
PP5
PP6
PP7
WIDE
BUS
BDLC
I/O
DLCRx
DLCTx
I/O
I/O
I/O
I/O
I/O
PDLC0
PDLC1
PDLC2
PDLC3
PDLC4
PDLC5
PDLC6
NARROW BUS
VDD × 2
VSS × 2
POWER FOR
INTERNAL
CIRCUITRY
VDDX × 2
VSSX × 2
POWER FOR
I/O DRIVERS
MC68HC912B32
MC68HC912B32TS/D
Figure 1 MC68HC912B32 Block Diagram
MOTOROLA
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MC68B912B32 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ MC68B912B32.PDF Datasheet ] | |
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