參數(shù)資料
型號： TMS370CX4XJC
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： TMS370CX4XJC
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
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—
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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