SELECTION REFERENCE GUIDE
1–15
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
selection reference guide
The TMS370 8-Bit Microcontroller Product Selection Guide Configurations Table, commonly called the
Selection Reference Guide (see Table 4), provides the user with an easy-to-use guide that includes the
following specific device information by subfamilies: product family description (device type, part number,
package and temperature options, and pin count); memory [program memory (ROM, EPROM), data memory
(EEPROM, RAM) and any capability of off-chip memory expansion]; and peripherals (timers, serial interfaces,
A/D channels, I/O, clock generators, and OTP and reprogrammable devices). The following symbol footnotes
are used in Table 4:
Packages: FN = PLCC, FZ = CLCC, N = PDIP, JD = CDIP, NJ = PSDIP (formerly N2), JC = CSDIP, NM = PSDIP, JN = CSDIP
Temperatures: ROM device types have L = 0
°
C to +70
°
C, A = – 40
°
C to +85
°
C, and T = – 40
°
C to +105
°
C temperature options; ROM-less, OTP
and UV-EPROM device types only have T.
§PACT SCI: PACT includes a mini-SCI. SCI1 module has 3-pin configuration while SCI2 module has 2-pin configuration.
RAM: Includes 256 bytes of standby RAM
#Memory: Includes secured memory feature
||Max Freq: Supports maximum operating frequency of 3 MHz SYSCLK
PACT WDOG: PACT includes a watchdog timer
ADC1 Channels: 8 channels A/D for 44 pin package, 4 channels A/D for 40 pin package
Timers: Timer 1 (T1) includes a watchdog timer programmable as a general purpose 16-bit timer
Ψ
44/40 Packages: 44 pins for FN, FZ packages. 40 pins for N, JD, NJ (formerly N2), JC packages.
Φ
68/64 Packages: 68 pins for FN, FZ packages. 64 pins for NM, JN packages
¥ TMS370CxCx SCI: Operable in asynchronous mode only
Converter Socket: Requires a TMDS37788OTP converter socket
Requires software modification (see the TMS370CxBx Data Sheet (literature number SPNS038))
Table 4 is a continuous table and only the applicable symbol footnotes are listed on each page.
development systems support tools
The TMS370 development system support tools listing shown in Table 5 identifies the available development
support tools (by tool description and part number) for each of the TMS370 subfamilies (’x0x, ’x1x, ’x2x, ’x32,
’x36,
…
, ’xCx).