參數(shù)資料
型號: TMS370C792
廠商: Texas Instruments, Inc.
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 4/54頁
文件大小: 785K
代理商: TMS370C792
TMS370Cx9x
8-BIT MICROCONTROLLER
SPNS036B – JANUARY 1996 – REVISED FEBRUARY 1997
4
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
description (continued)
Table 1 provides a memory configuration overview of the TMS370Cx9x devices.
Table 1. Memory Configurations
DEVICE
PROGRAM
MEMORY
(BYTES)
DATA MEMORY
(BYTES)
PACKAGES
44 PIN PLCC/CLCC, OR
40 PIN PSDIP/CSDIP
ROM
EPROM
RAM
EEPROM
ááááááááááááááááááááááááááááááááá
TMS370C090A
ááááááááááááááááááááááááááááááááá
System evaluators and development tools are for use only in a prototype environment, and their reliability has not been characterized.
The NJ designator for the 40-pin plastic shrink DIP package was formerly known as N2. The mechanical drawing of the NJ is identical to the N2
package and did not need to be requalified.
4K
128
256
128
128
256
FZ – CLCC / JC –CSDIP
FN – PLCC / NJ –PSDIP
FN – PLCC / NJ –PSDIP
TMS370C792
8K
256
ááááááááááááááááááááááááááááááááá
8K
The suffix letter A appended to the device names shown in the device column of Table 1 indicates the
configuration of the device. ROM and EPROM devices have a different configuration as indicated in Table 2.
ROM devices with the suffix letter A are configured through a programmable contact during manufacture.
Table 2. Suffix Letter Configuration
DEVICE§
WATCHDOG TIMER
CLOCK
LOW-POWER MODE
EPROM without A
Standard
Divide by 4 (Standard oscillator)
Divide-by-4 (Standard oscillator)
Enabled
Standard
ROM A
Hard
Divide-by-4 or Divide-by-1 (PLL)
Enabled or disabled
Simple
§Refer to the “device numbering conventions” section for device nomenclature and the “device part numbers” section for ordering.
The 4K bytes of mask-programmable ROM in the associated TMS370Cx9x device are replaced with 8K bytes
of EPROM in the TMS370C792 while all other available memory and on-chip peripherals are identical. A
one-time-programmable device (OTP) (TMS370C792) and a reprogrammable device (SE370C792) are
available.
The TMS370C792 OTP device is available in a plastic package. This microcontroller is effective for use as an
immediate production update for the TMS370Cx9x 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 SE370C792 has a windowed ceramic package that allows reprogramming of the program EPROM memory
during the development/prototyping design phase. The SE370C792 device allows quick updates to
breadboards and prototype systems while iterating initial designs.
The TMS370Cx9x 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 TMS370Cx9x 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 TMS370Cx9x family is fully
instruction-set-compatible, allowing easy transition between members of the TMS370 8-bit microcontroller
family.
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