UPD78F9202MA-CAC-A Renesas Electronics America, UPD78F9202MA-CAC-A Datasheet - Page 177

• Manufacturer Part Number: UPD78F9202MA-CAC-A
• Description: MCU 8BIT 4KB FLASH 128B RAM
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9202MA-CAC-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 7
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

(8) Conversion results just after A/D conversion start
(9) A/D conversion result register (ADCR, ADCRH) read operation
(10) The operating current at the conversion waiting mode
(11) Internal equivalent circuit
The first A/D conversion value immediately after A/D conversion starts may not fall within the rating range if the
ADCS bit is set to 1 within 1 s after the ADCE bit was set to 1, or if the ADCS bit is set to 1 with the ADCE bit =
0. Take measures such as polling the A/D conversion end interrupt request (INTAD) and removing the first
conversion result.
When a write operation is performed to the A/D converter mode register (ADM) and analog input channel
specification register (ADS), the contents of ADCR and ADCRH may become undefined. Read the conversion
result following conversion completion before writing to ADM and ADS. Using a timing other than the above may
cause an incorrect conversion result to be read.
The DC characteristic of the operating current at the STOP mode is not satisfied at the conversion waiting mode
(when A/D converter mode register (ADM) is set up with bit 7(ADCS) =0 and bit 0 (ADCE) =1) (only comparator
consumes power).
The equivalent circuit of the analog input block is shown below.
Table 9-3. Resistance and Capacitance Values (Reference Values) of Equivalent Circuit
Remarks 1. The resistance and capacitance values shown in Table 9-3 are not guaranteed
4.5 V
2.7 V
V
V
DD
DD
2. n = 0 to 3
3. R
V
< 4.5 V
DD
Figure 9-21. Internal Equivalent Circuit of ANIn Pin
5.5 V
values.
R
C
C
CHAPTER 9 A/D CONVERTER ( PD78F920x ONLY)
ANIn
OUT
IN
OUT
IN
:
:
: Allowable signal source impedance
: Internal pin capacitance
Analog input equivalent resistance
Analog Input equivalent capacitance
User’s Manual U18172EJ3V0UD
R
OUT
1 k
1 k
R
OUT
60 k
3 k
R
IN
LSI internal
C
OUT
R
IN
C
8 pF
8 pF
OUT
C
IN
15 pF
15 pF
C
IN
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