Z8F0813HJ005EG Zilog, Z8F0813HJ005EG Datasheet - Page 131

• Manufacturer Part Number: Z8F0813HJ005EG
• Description: IC Z8 ENCORE MCU FLASH 8K 28SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F0813HJ005EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Other names: 269-4182; Z8F0813HJ005EG

ADC Control Register Definitions
BITS
FIELD
RESET
R/W
ADDR
PS025203-0405
Note:
Caution:
ADC Control Register 0
CEN
R/W
0
7
where GAINCAL is the gain calibration byte, OFFCAL is the offset calibration byte and
ADC
two’s complement format, as are the compensated and uncompensated ADC values.
The offset compensation is performed first, followed by the gain compensation. One bit of
resolution is lost because of rounding on both the offset and gain computations. As a result
the ADC registers read back 13 bits: 1 sign bit, two calibration bits lost to rounding and 10
data bits.
Also note that in the second term, the multiplication should be performed before the divi-
sion by 2
The ADC Control register selects the analog input channel and initiates the analog-to-dig-
ital conversion.
CEN—Conversion Enable
0 = Conversion is complete. Writing a 0 produces no effect. The ADC automatically clears
this bit to 0 when a conversion is complete.
1 = Begin conversion. Writing a 1 to this bit starts a conversion. If a conversion is already
in progress, the conversion restarts. This bit remains 1 until the conversion is complete.
REFSELL—Voltage Reference Level Select Low Bit; in conjunction with the High bit
(REFSELH) in
age reference; the following details the effects of {REFSELH, REFSELL}; note that this
reference is independent of the Comparator reference
00= Internal Reference Disabled, reference comes from external pin
01= Internal Reference set to 1.0 V
10= Internal Reference set to 2.0 V (default)
Although the ADC can be used without the gain and offset compensation, it does exhibit
non-unity gain. Designing the ADC with sub-unity gain reduces noise across the ADC
range but requires the ADC results to be scaled by a factor of 8/7.
uncomp
REFSELL
16
R/W
. Otherwise, the the second term will incorrectly evaluate to zero.
6
0
is the uncompensated value read from the ADC. The OFFCAL value is in
Table 72. ADC Control Register 0 (ADCCTL0)
ADC Control/Status Register 1
REFEXT
R/W
5
0
P R E L I M I N A R Y
CONT
R/W
0
4
F70H
, this determines the level of the internal volt-
R/W
3
0
Z8 Encore!
R/W
0
2
ANAIN[3:0]
Product Specification
Analog-to-Digital Converter
®
R/W
1
0
Z8F0823 Series
R/W
0
0
114