Z8F042AHH020EG Zilog, Z8F042AHH020EG Datasheet - Page 173

• Manufacturer Part Number: Z8F042AHH020EG
• Description: IC ENCORE XP MCU FLASH 4K 20SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F042AHH020EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4156; Z8F042AHH020EG

Table 84. Flash Status Register (FSTAT)
Table 85. Page Select Register (FPS)
PS022517-0508
BITS
FIELD
RESET
R/W
ADDR
BITS
FIELD
RESET
R/W
ADDR
Flash Status Register
Page Select Register
7
INFO_EN
7
The Flash Status Register
This register can be read at any time. The Read-only Flash Status Register shares its Reg-
ister File address with the Write-only Flash Control Register.
Reserved
These bits are reserved and must be 0.
FSTAT—Flash Controller Status
00_0000 = Flash Controller locked.
00_0001 = First unlock command received.
00_0010 = Second unlock command received.
00_0011 = Flash Controller unlocked.
00_0100 = Flash Sector Protect Register selected.
00_1xxx = Program operation in progress.
01_0xxx = Page erase operation in progress.
10_0xxx = Mass erase operation in progress.
The Page Select (FPS) Register
programmed. Each Flash Page contains 512 bytes of Flash memory. During a Page Erase
operation, all Flash memory locations with the 7 most significant bits of the address given
by the PAGE field are erased to
The Page Select Register shares its Register File address with the Flash Sector Protect
Register. The Page Select Register cannot be accessed when the Flash Sector Protect
Register is enabled.
Reserved
6
6
5
5
(Table
4
(Table
FFH
84) indicates the current state of the Flash Controller.
4
.
85) selects the Flash memory page to be erased or
FF8H
FF9H
R/W
R
0
0
3
PAGE
3
FSTAT
2
Z8 Encore! XP
2
Product Specification
1
1
®
F0822 Series
Flash Memory
0
0
160