ZLF645S0P2064G Zilog, ZLF645S0P2064G Datasheet - Page 39

• Manufacturer Part Number: ZLF645S0P2064G
• Description: Microcontrollers (MCU) 64K Flash 512B RAM 20 pin
• Manufacturer: Zilog

Specifications of ZLF645S0P2064G

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 64 KB
• Data Ram Size: 512 KB
• Interface Type: ICP, UART
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Package / Case: PDIP-20
• Minimum Operating Temperature: 0 C
• Lead Free Status / Rohs Status: Details

Table 14. Port 0/1 Mode Register (P01M)
PS026407-0408
Bit
Field
Reset
R/W
Address
Bit Position
[7]
[6]
[5:4]*
[3]
[0]
*
For package types other than the 48-pin package, writes to bit 3 have no effect.
*
Port 0/1 Mode Register
Note:
Reserved
The Port 0/1 Mode register (see
Port 1. The Port 0 direction is nibble-programmable. Bit 6 controls the upper nibble of
Port 0, bits [7:4]. Bit 0 controls the lower nibble of Port 0, bits [3:0]. The Port 1 direction
is byte programmable.
Only P00, P01, and P07 are available for ZLF645 Flash MCU 20-pin configuration.
Value
—
X
7
—
0
0
1
0
1
0
1
Description
Reserved—Must be written to 1. Reads 1b.
P07:P04 Mode
Output
Input
Reserved—Must be written to 1. Reads 1’s.
Port 1 Mode
Output
Input
P00:P03 Mode
Output
Input
P07:P04 Mode
W
6
1
Bank Independent: F8h; Linear: 0F8h
Reserved
—
X
5
Table
—
X
4
14) determines the I/O direction of Port 0 and
Port 1 Mode
W
3
1
ZLF645 Series Flash MCUs
Reserved
—
X
2
Product Specification
—
X
1
Port 0/1 Mode Register
P03:P00 Mode
W
0
1
31