MC68HC12D60 Datasheet, PDF (44/432 Pages) Motorola, Inc – Advance Information - Rev 4.0

Freescale Semiconductor, Inc.
Pinout and Signal Descriptions
Table 3-1. 68HC(9)12D60 Power and Ground Connection Summary
Mnemonic
V_DD
V_SS
V_DDX
V_SSX
V_DDA
V_SSA
V_RH1
V_RL1
V_RH0
V_RL0
V_DDPLL
V_SSPLL
V_FP
Pin Number
80-pin
QFP
112-pin
QFP
9, 49
12, 65
10, 50
14, 66
30, 75
42, 107
29, 74
40, 106
61
85
62
88
—
86
—
87
51
67
52
68
31
43
33
45
71
97
Description
Internal power and ground.
External power and ground, supply to pin drivers.
Operating voltage and ground for the analog-to-digital
converter, allows the supply voltage to the A/D to be
bypassed independently.
Reference voltages for the analog-to-digital converter 1
Reference voltages for the analog-to-digital converter 0.
Provides operating voltage and ground for the Phased-Locked
Loop. This allows the supply voltage to the PLL to be
bypassed independently.
Programming voltage for the Flash EEPROM and required
supply for normal operation. (68HC912D60 only – on the
68HC12D60 this pin is not connected and can be tied to 5V
or 12V without effect)
3.5 Signal Descriptions
3.5.1 Crystal Driver and External Clock Input (XTAL, EXTAL)
These pins provide the interface for either a crystal or a CMOS
compatible clock to control the internal clock generator circuitry. Out of
reset the frequency applied to EXTAL is twice the desired E–clock rate.
All the device clocks are derived from the EXTAL input frequency.
NOTE: CRYSTAL CIRCUIT IS CHANGED FROM STANDARD.
Advance Information
44
Pinout and Signal Descriptions
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68HC(9)12D60 — Rev 4.0
MOTOROLA