MC68HC05C8A Datasheet, PDF (97/158 Pages) Motorola, Inc – Microcontrollers

Technical Data — MC68HC05C8A • MC68HCL05C8A • MC68HSC05C8A
Section 11. Operating Modes
11.1 Contents
11.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
11.3 User Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
11.4 Self-Check Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
11.4.1 Self-Check Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
11.4.2 Self-Check Results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
11.2 Introduction
The microcontroller unit (MCU) has two modes of operation: user mode
and self-check mode. Table 11-1 shows the conditions required to enter
into each mode, where V_TST = 2 x V_DD.
Table 11-1. Operating Mode Conditions
RESET
IRQ
V_SS to V_DD
V_TST
TCAP
V_SS to V_DD
V_DD
Mode
User
Self-Check
MC68HC05C8A • MC68HCL05C8A • MC68HSC05C8A — Rev. 5.0
MOTOROLA
Operating Modes
Technical Data
97