mc68hc912d60c Freescale Semiconductor, Inc, mc68hc912d60c Datasheet - Page 44

• Manufacturer Part Number: mc68hc912d60c
• Description: Hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Pinout and Signal Descriptions
3.5 Signal Descriptions
3.5.1 Crystal Driver and External Clock Input (XTAL, EXTAL)
3.5.1.1 Crystal Connections
Technical Data
44
Mnemonic
V
V
V
V
V
V
V
V
V
V
DDPLL
V
V
SSPLL
DDX
DDA
SSX
SSA
RH1
RH0
RL1
RL0
DD
SS
Table 3-1. MC68HC912D60A Power and Ground Connection Summary
80-pin
10, 50
30, 75
29, 74
9, 49
QFP
61
62
51
52
31
33
—
—
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.
Refer to
Pin Number
112-pin
42, 107
40, 106
12, 65
14, 66
Section 12. Oscillator
QFP
85
88
86
87
67
68
43
45
Pinout and Signal Descriptions
Internal power and ground.
External power and ground, supply to pin drivers.
Operating voltage and ground for the analog-to-digital
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
converter, allows the supply voltage to the A/D to be
bypassed independently.
Loop. This allows the supply voltage to the PLL to be
bypassed independently.
for details of crystal connections.
Description
MC68HC912D60A — Rev. 3.1
Freescale Semiconductor