MC68HC05T16
MOTOROLA
2-5
PIN DESCRIPTIONS AND INPUT/OUTPUT PORTS
2
Figure 2-2 Parallel Port I/O Circuitry
INPUT
REGISTER
BIT
INPUT I/O
OUTPUT
I/O PIN
DATA DIRECTION
REGISTER BIT
LATCHED OUTPUT
DATA BIT
INTERNAL
MC68HC05
CONNECTIONS
DDR 7
DDR 6
DDR 5
DDR 4
DDR 3
DDR 2
DDR 1
DDR 0
0
1
2
3
4
5
6
7
Px7
Px6
Px5
Px4
Px3
Px2
Px1
Px0
TYPICAL PORT
DATA DIRECTION REGISTER
TYPICAL PORT REGISTER
I/O PORT LINES
&
+
V
DD
PAD
IP
PORT DATA
PORT DDR
INTERNAL LOGIC
P
N
NOTE:
(1) IP = INPUT PROTECTION
(2) LATCH-UP PROTECTION NOT SHOWN
(a)
(b)
(c)
TPG
23
Summary of Contents for MC68HC05T16
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Page 64: ...MOTOROLA 6 10 MC68HC05T16 M BUS SERIAL INTERFACE 6 THIS PAGE LEFT BLANK INTENTIONALLY TPG 62 ...
Page 110: ...MOTOROLA 12 4 MC68HC05T16 LOW POWER MODES 12 THIS PAGE LEFT BLANK INTENTIONALLY TPG 108 ...
Page 116: ...MOTOROLA 13 6 MC68HC05T16 OPERATING MODES 13 THIS PAGE LEFT BLANK INTENTIONALLY TPG 114 ...