Z8F042AHJ020SC00TR Zilog, Z8F042AHJ020SC00TR Datasheet - Page 166

• Manufacturer Part Number: Z8F042AHJ020SC00TR
• Description: IC ENCORE XP MCU FLASH 4K 28SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F042AHJ020SC00TR

• 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: 23
• 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Z8F042AHJ020SC00T

Table 84. Trim Bit Address Register (TRMADR)
Flash Option Bit Control Register Definitions
BITS
FIELD
RESET
R/W
ADDR
PS022825-0908
Reading the Flash Information Page
Trim Bit Address Register
R/W
7
0
Randomized Lot Identification Bits
As an optional feature, Zilog is able to provide a factory-programmed random lot
identifier. With this feature, all devices in a given production lot are programmed with the
same random number. This random number is uniquely regenerated for each successive
production lot and is not likely to be repeated.
The randomized lot identifier is a 32 byte binary value, stored in the Flash information
page (see
on page 166 for more details) and is unaffected by mass erasure of the device's Flash
memory.
The following code example shows how to read data from the Flash information area.
; get value at info address 60 (FE60h)
ldx FPS, #%80 ; enable access to flash info page
ld R0, #%FE
ld R1, #%60
ldc R2, @RR0 ; R2 now contains the calibration value
The Trim Bit Address (TRMADR) register contains the target address for an access to the
trim option bits
Reading the Flash Information Page
R/W
6
0
(Table
TRMADR - Trim Bit Address (00H to 1FH)
R/W
84).
5
0
R/W
4
0
FF6H
R/W
on page 155 and
3
0
Z8 Encore! XP
R/W
2
0
Randomized Lot Identifier
Product Specification
R/W
1
0
®
F082A Series
Flash Option Bits
R/W
0
0
155