ZLF645S0P2032G Zilog, ZLF645S0P2032G Datasheet - Page 80

• Manufacturer Part Number: ZLF645S0P2032G
• Description: Microcontrollers (MCU) 32K Flash 512B RAM 20 pin
• Manufacturer: Zilog

Specifications of ZLF645S0P2032G

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 32 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 35. Flash Status Register (FSTAT)
PS026407-0408
Bits
Field
Reset
R/W
Address
Bit Position
[7:6]
[5:0]
Flash Status Register
Flash Page Select Register
R
7
0
The Flash Status register (see
This register can be read any time. The read-only Flash Status register shares its Register
File address with the Write-only Flash Control register.
The Flash Page Select register (see
Protect register. Unless the Flash Controller is unlocked and written with 5EH, writes to
this address target the Flash Page Select register.
The register is used to select one Flash main memory page to be programmed or erased
when IFEN bit is conditioned logic Low. Each Flash Page contains 512 bytes of Flash
memory. During a Page Erase operation, all Flash memory having addresses with the most
significant 7-bits given by FPS[6:0] are chosen for Program/Erase operation. This register
is also used to select one Flash Information Area page to be programmed or erased, when
IFEN bit is conditioned logic High. Each Flash Information Page contains 64 bytes.
Reserved
000000
000001
000010
000100
000011
001xxx
010xxx
100xxx
Value
—
R
6
0
Description
Reserved —Reads as 0’s.
FSTAT —Flash Controller Status
Flash Controller locked.
First unlock command received (73H written).
Second unlock command received (8CH written).
Flash Controller unlocked.
Sector protect register selected.
Program operation in progress.
Page erase operation in progress.
Mass erase operation in progress.
R
5
0
Bank F, Register address: 01H
Table
R
4
0
35) indicates the current state of the Flash Controller.
Table
36) shares address space with the Flash Sector
R
3
0
FSTAT
ZLF645 Series Flash MCUs
R
2
0
Flash Control Register Definitions
Product Specification
R
1
0
R
0
0
72