R5F21122FP#U0 Renesas Electronics America, R5F21122FP#U0 Datasheet - Page 29

• Manufacturer Part Number: R5F21122FP#U0
• Description: IC R8C MCU FLASH 8K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/12r

Specifications of R5F21122FP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, WDT
• Number Of I /o: 22
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521134EPB00 - KIT EMULATOR PROBE FOR PC7501R0E521134CPE00 - EMULATOR COMPACT R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/12 Group
Rev.1.20
REJ09B0110-0120
6. Clock Generation Circuit
Table 6.1 Clock Generation Circuit Specifications
U s e o f c l o c k
C l o c k f r e q u e n c y
Usable oscillator
P i n s t o c o n n e c t
o s c i l l a t o r
O s c i l l a t i o n s t a r t s
a n d s t o p s
O s c i l l a t o r s t a t u s
a f t e r r e s e t
O t h e r
NOTES:
1. Can be used as P4
The clock generation circuit contains two oscillator circuits as follows:
Table 6.1 lists the clock generation circuit specifications. Figure 6.1 shows the clock generation circuit.
Figures 6.2 and 6.3 show the clock-related registers.
• Main clock oscillation circuit
• On-chip oscillator (with oscillation stop detection function)
while the main clock oscillation circuit is not used.
Jan 27, 2006
I t e m
• C P U c l o c k s o u r c e
• P e r i p h e r a l f u n c t i o n c l o c k s o u r c e
• CPU and peripheral function
c l o c k c a n b e i n p u t
• Ceramic resonator
• Crystal oscillator
X
Present
S t o p p e d
E x t e r n a l l y d e r i v e d
0 t o 1 6 M H z
page 17 of 181
clock sources when the
main clock stops oscillating
I N
, X
6
and P4
o s c i l l a t i o n c i r c u i t
O U T (1 )
M a i n c l o c k
7
when the on-chip oscillator clock is used for CPU clock
• C P U c l o c k s o u r c e
• P e r i p h e r a l f u n c t i o n c l o c k s o u r c e
• C P U a n d p e r i p h e r a l f u n c t i o n
O s c i l l a t i n g
A b o u t 1 2 5 k H z
Present
c l o c k s o u r c e s w h e n t h e m a i n
c l o c k s t o p s o s c i l l a t i n g
( N o t e 1 )
O n - c h i p o s c i l l a t o r
6. Clock Generation Circuit