Features: ` CMOS/EEPROM/EPROM Technologies on a Single Device
Mask-ROM Devices for High-Volume Production
One-Time-Programmable (OTP) EPROM Devices for Low-Volume Production
Reprogrammable EPROM Devices for Prototyping Purposes
` Internal System Memory Configurations
On-Chip Program Memory Versions
ROM: 24K Bytes
EPROM: 24K Bytes
Data EEPROM: 256 Bytes
Static RAM: 512 Bytes
` Flexible Operating Features
Low-Power Modes: STANDBY and HALT
Commercial, Industrial, and Automotive Temperature Ranges
Clock Options:
Divide-by-4 (0.5 MHz 5 MHz SYSCLK)
Divide-by-1 (2 MHz 5 MHz SYSCLK) Phase-Locked Loop (PLL)
Supply Voltage (VCC): 5 V ± 10%
` Eight-Channel 8-Bit Analog-to-Digital Converter 1 (ADC1)
` TMS370 Series Compatibility
Instructions Upwardly Compatible With All TMS370 Devices
Register-to-Register Architecture
256 General-Purpose Registers
14 Powerful Addressing Modes
` Two 16-Bit General-Purpose Timers
` On-Chip 24-Bit Watchdog Timer
` Flexible Interrupt Handling
` CMOS/Package /TTL-Compatible I/O Pins
64-Pin Plastic and Ceramic Shrink Dual-In-Line Packages /44 Bidirectional, 9 Input Pins
68-Pin Plastic and Ceramic Leaded Chip Carrier Packages /46 Bidirectional, 9 Input Pins
All Peripheral Function Pins Are Software Configurable for Digital I/O
` Workstation/PC-Based Software Development System
C Compiler and C Source Debugger
Real-Time In-Circuit Emulation
Extensive Breakpoint/Trace Capability
Software Performance Analysis
Multi-Window User Interface
Microcontroller ProgrammerPinout
SpecificationsSupply voltage range‡ VCC1, VCC2, VCC3 (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . .0.6 V to 7 V
Input voltage range, All pins except MC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.6 V to 7 V
MC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.6 V to 14 V
Input clamp current, IIK (VI < 0 or VI > VCC1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±20 mA
Continuous output current per buffer, IO (VO = 0 to VCC1)§ . . . . . . . . . . . . . . . . . . . . . . . . .. ±10 mA
Maximum ICC current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 mA
Maximum ISS current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 mA
Continuous power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 W
Operating free-air temperature range, TA: L version . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
A version . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to 85°C
T version . . . . . . . . . . . . . . . . . . . . . . . . 40°C to 105°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65°C to 150°C
DescriptionThe TMS370Cx7x devices are members of the TMS370 family of single-chip 8-bit microcontrollers. Unless otherwise noted, the term TMS370Cx7x refers to these devices. The TMS370 family provides cost-effective real-time system control through integration of advanced peripheral function modules and various on-chip emory configurations.
The TMS370Cx7x family is implemented using high-performance silicon-gate CMOS EPROM and EEPROM technologies. The low-operating power, wide-operating temperature range, and noise immunity of CMOS technology, coupled with the high performance and extensive on-chip peripheral functions make the TMS370Cx7x devices attractive in system designs for automotive electronics, industrial motor control, computer peripheral control, telecommunications, and consumer application.
All TMS370Cx7x devices contain the following on-chip peripheral modules:
Eight-channel, 8-bit analog-to-digital converter 1 (ADC1)
One 24-bit general-purpose watchdog timer
Two 16-bit general-purpose timers (one with an 8-bit prescaler)
The 24K bytes of mask-programmable ROM in the associated TMS370C077 device are replaced with 24K bytes of EPROM in the TMS370C777 while all other available memory and on-chip peripherals are identical. A one-time-programmable device (OTP) (TMS370C777) and a reprogrammable device (SE370C777) are available. The TMS370Cx7x OTP device is available in a plastic package. This microcontroller is effective for use as an immediate production update for the TMS370C077 ROM device or for low-volume production runs when the mask charge or cycle time for the low-cost mask-ROM device is not practical. The SE370C777 has a windowed ceramic package that allows reprogramming of the program EPROM memory during the development/prototyping design phase. The SE370C777 device allows quick updates to breadboards and prototype systems while iterating initial designs.
The TMS370Cx7x family provides two low-power modes (STANDBY and HALT) for applications where low-power consumption is critical. Both modes stop all CPU activity (that is, no instructions are executed). In the STANDBY mode, the internal oscillator and the general-purpose timer remain active. In the HALT mode, all device activity is stopped. The device retains all RAM data and peripheral configuration bits throughout both low-power modes.
The TMS370Cx7x features advanced register-to-register architecture that allows direct arithmetic and logical operations without requiring an accumulator (for example, ADD R24, R47; add the contents of register 24 to the contents of register 47 and store the result in register 47). The TMS370Cx7x family is fully instruction-set-compatible, allowing easy transition between members of the TMS370 8-bit microcontroller family.
The TMS370Cx7x family provides the system designer with very economical, efficient solutions to real-time control applications. The TMS370 family compact development tool (CDTE) solves the challenge of efficiently developing the software and hardware required to design the TMS370Cx7x into an ever-increasing number of complex applications. The application source code can be written in assembly and C language, and the output code can be generated by the linker. The TMS370 family CDT development tool can communicate through a standard RS-232-C interface with an existing personal computer. This allows the use of personal-computer editors and software utilities already familiar to the designer. The TMS370 family CDT emphasizes ease-of-use through extensive use of menus and screen windowing so that a system designer with minimal training can begin developing software. Precise real-time in-circuit emulation and extensive symbolic debug and analysis tools ensure efficient software and hardware implementation as well as a reduced time-to-market cycle.
The TMS370Cx7x family, together with the TMS370 family CDT370, starter kit, software tools, the SE370C777 reprogrammable device, comprehensive product documentation, and customer support, provide a complete solution to the needs of the system designer.
TMS370C077A Data Sheet
