UPD78F1203MC-CAB-AX Renesas Electronics America, UPD78F1203MC-CAB-AX Datasheet - Page 266
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UPD78F1203MC-CAB-AX
Manufacturer Part Number
UPD78F1203MC-CAB-AX
Description
MCU 16BIT 78K0R/LX3 30-SSOP
Manufacturer
Renesas Electronics America
Series
78K0R/Ix3r
Datasheet
1.UPD78F1201MC-CAB-AX.pdf
(1067 pages)
Specifications of UPD78F1203MC-CAB-AX
Core Processor
78K/0R
Core Size
16-Bit
Speed
40MHz
Connectivity
3-Wire SIO, I²C, LIN, UART/USART
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
21
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD78F1203MC-CAB-AX
Manufacturer:
RENESAS
Quantity:
15 000
Part Number:
UPD78F1203MC-CAB-AX
Manufacturer:
NEC
Quantity:
20 000
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5.6.7 Time required for switchover of CPU clock and main system clock
clock can be switched (between the main system clock and the subsystem clock), main system clock can be switched
(between the internal high-speed oscillation clock and the high-speed system clock), and the division ratio of the main
system clock can be changed.
pre-switchover clock for several clocks (see Table 5-7 to Table 5-10).
(CLS) of CKC. Whether the main system clock is operating on the high-speed system clock or internal high-speed
oscillation clock can be ascertained using bit 5 (MCS) of CKC.
264
By setting bits 0 to 2, 4, and 6 (MDIV0 to MDIV2, MCM0, CSS) of the system clock control register (CKC), the CPU
The actual switchover operation is not performed immediately after rewriting to CKC; operation continues on the
Whether the CPU is operating on the main system clock or the subsystem clock
When the CPU clock is switched, the peripheral hardware clock is also switched.
Note
(Remarks 1 and 2 are listed on the next page.)
Table 5-8. Maximum Number of Clocks Required for f
Set Value Before Switchover
Set Value Before Switchover
(f
The 78K0R/IB3 doesn’t have the subsystem clock.
(f
MAIN
MAIN
Clock A
f
f
0
1
MAIN
MAIN
= f
f
= f
IH
Table 5-7. Maximum Time Required for Main System Clock Switchover
MX
IH
Clock A
Clock B
)
MCM0
)
Table 5-9. Maximum Number of Clocks Required for f
f
f
f
f
MX
MX
MX
MX
(changing the division ratio)
>f
<f
>f
<f
IH
IH
IH
IH
Switching directions
CHAPTER 5 CLOCK GENERATOR
1 + f
2f
1 + f
MX
User’s Manual U19678EJ1V1UD
/f
B
MX
IH
/f
A
/f
clock
IH
clock
clock
(f
Clock A
MAIN
0
= f
IH
Set Value After Switchover
Set Value After Switchover
)
MAIN
Clock B
↔ f
f
MCM0
f
MAIN
f
SUB
MX
MAIN
1 + f
1 + f
2f
IH
/f
(Changing the Division Ratio)
A
MX
MX
/f
B
/f
clock
IH
clock
IH
clock
Note
(f
See Table 5-8
See Table 5-9
See Table 5-10
↔ f
MAIN
Clock B
can be ascertained using bit 7
MX
1
= f
Remark
MX
)
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