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MC68HC812A4EC/D

7/28/98

Technical Supplement

MC68C812A4 3.3V Electrical Characteristics

The MC68C812A4 is the low-voltage version of the standard MC68HC812A4 microcontroller unit

(MCU), a 16-bit device composed of standard on-chip peripheral modules connected by an intermodule

bus. Modules include a 16-bit central processing unit (CPU12), a Lite integration module (LIM), two

asynchronous serial communications interfaces (SCI0 and SCI1), a serial peripheral interface (SPI), a

timer and pulse accumulation module, an 8-bit analog-to-digital converter (ATD), 1-Kbyte RAM, 4-Kbyte

EEPROM, and memory expansion logic with chip selects, key wakeup ports, and a phase-locked loop

(PLL).

This supplement contains the most accurate electrical information for the MC68C812A4 microcontroller

available at the time of publication. The information should be considered preliminary and is subject to

change. The following characteristics are contained in this document:

Table 1 Maximum Ratings

Table 2 Thermal Characteristics

Table 3 DC Electrical Characteristics

Table 4 Supply Current

Table 5 ATD Maximum Ratings

Table 6 ATD DC Electrical Characteristics

Table 7 Analog Converter Characteristics (Operating)

Table 8 ATD AC Characteristics (Operating)

Table 9 EEPROM Characteristics

Table 10 Control Timing

Table 11 Peripheral Port Timing

Table 12 Non-Multiplexed Expansion Bus Timing

Table 13 SPI Timing

Freescale Semiconductor, Inc.

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