z86d73 ZiLOG Semiconductor, z86d73 Datasheet - Page 83

• Manufacturer Part Number: z86d73
• Description: 40/44/48-pin Low-voltage
• Manufacturer: ZiLOG Semiconductor

PS019402-1103
R248 P01M
Figure 50. Port 0 and 1 Mode Register (F8h: Write Only)
D7
* Default setting after reset; only P00 and P07 are available on Z86L71
D6
D5
D4
P
D3
R
E
D2
L
D1
I
M
D0
I
N
A
40/44/48-Pin Low-Voltage IR OTP
P00–P03 Mode
00: Output
01: Input *
1X: A11–A8
Stack Selection
0: External
1: Internal *
P17–P10 Mode
00: Byte Output
01: Byte Input
10: AD7–AD0
11: High-Impedance AD7–AD0, AS,
DS, R/W, A11–A8, A15–A12, if
selected
External Memory Timing
0: Normal *
1: Extended
P07–P04 Mode
00: Output
01: Input *
1X: A15–A12
R
Y
Z86D73
77