The TMS370Cx5x family of single-chip 8-bit microcontrollers provides cost-effective real-time system control through integration of advanced peripheral function modules and various on-chip memory configurations. The TMS370Cx5x family presently consists of twenty-one devices which are grouped into seven main sub-families: the TMS370Cx50, TMS370Cx52, TMS370Cx53, TMS370Cx56, TMS370Cx58, TMS370Cx59, and SE370C75x.
The TMS370Cx5x family of devices 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 TMS370Cx5x devices attractive in system designs for automotive electronics, industrial motor control, computer peripheral control, telecommunications, and consumer application. Table 2 provides a memory configuration overview of the TMS370Cx5x devices.
The suffix letter (A or B) appended to the device names shown in the device column of Table 2 indicates the configuration of the device. ROM or an EPROM devices have different configurations as indicated in Table 3. ROM devices with the suffix letter A are configured through a programmable contact during manufacture.
Unless otherwise noted, the terms TMS370Cx50, TM370Cx52, TMS370Cx53, TMS370Cx56, TMS370Cx58, TMS370Cx59, and SE370C75x refer to the individual devices listed in Table 2 and described in this data sheet. All TMS370Cx5x devices contain the following on-chip peripheral modules:
Two 16-bit general-purpose timers (one with an 8-bit prescaler)
TMS370C756, TMS370C758, and TMS370C759 are one-time programmable (OTP) devices that are available in plastic packages. This microcomputer is effective to use for immediate production updates for other members of the TMS370Cx5x family or for low-volume production runs when the mask charge or cycle time for low-cost mask ROM devices is not practical.
The SE370C756, SE370C758, and SE370C759 have windowed ceramic packages to allow reprogramming of the program EPROM memory during the development/prototyping phase of design. The SE370C75x devices allow quick updates to breadboards and prototype systems while iterating initial designs.
The TMS370Cx5x family provides two low-power modes (STANDBY and HALT) for applications where low-power consumption is critical. Both modes stop all central processing unit (CPU) activity (that is, no intructions 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 TMS370Cx5x 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 TMS370Cx5x family is fully instruction-set-compatible, allowing easy transition between members of the TMS370 8-bit microcontroller family.
The SPI and the two operational modes of the SCI1 give three methods of serial communications. The SCI1 alllows standard RS-232-C communications interface between other common data transmission equipment, while the SPI gives high-speed communications between simpler shift-register type devices, such as display drivers, ADC1 converter, phase-locked loop (PLL), I/O expansion, or other microcontrollers in the system.
For large memory applications, the TMS370Cx5x family provides an external bus with non-multiplexed address and data. Precoded memory chip-select outputs can be enabled, which allows minimum-chip-count system implementations. Wait-state support facilitates performance matching among the CPU, external memory, and the peripherals. All pins associated with memory expansion interface are individually software configurable for general purpose digital input/output (I/O) pins when operating in the microcomputer mode.
The TMS370Cx5x family provides the system designer with very economical, efficient solution to real-time control applications. The TMS370 family extended development system (XDSTM) and compact development tool (CDTTM) solve the challenge of efficiently developing the software and hardware required to design the TMS370Cx5x into an ever-increasing number of complex applications. The application source code can be written in assembly and C-language, and the output code an be generated by the linker. The TMS370 family XDS development tools communicate through a standard RS-232-C interface with an existing personal computer. This allows the use of the personal computer editors and software utilities already familiar to the designer. The TMS370 family XDS 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 reduced time-to-market cycle.
The TMS370Cx5x family together with the TMS370 family XDS/22, CDT370, design kit, starter kit, software tools, the SE370C75x reprogrammable devices, comprehensive product documentation, and customer support provide a complete solution to the needs of the system designer.
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: 4K to 48K Bytes
EPROM: 16K to 48K Bytes
ROM-less
Data EEPROM: 256 or 512 Bytes
Static RAM: 256 to 3.5K Bytes
External Memory/Peripheral Wait States
Precoded External Chip-Select Outputs in Microcomputer Mode
Flexible Operating Features
Low-Power Modes: STANDBY and HALT
Commercial, Industrial, and Automotive Temperature Ranges
