M37542F8FP#W4 Renesas Electronics America, M37542F8FP#W4 Datasheet - Page 37

• Manufacturer Part Number: M37542F8FP#W4
• Description: IC 740 MCU FLASH 32K 36-SSOP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M37542F8FP#W4

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 29
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Fig. 32 Structure of timer A, B mode register
7542 Group
Fig. 34 Block diagram of timer A and timer B
Rev.3.03
REJ03B0006-0303
b 7
CPU mode register
Clock division
ratio selection
bits
oscillator
On-chip
X
IN
Jul 11, 2008
“00”
“01”
“11”
“10”
b 0
oscillator
On-chip
Timer B count source
T i m e r A w r i t e c o n t r o l b i t
T i m e r A c o u n t s t o p b i t
T i m e r B w r i t e c o n t r o l b i t
T i m e r B c o u n t s t o p b i t
N o t u s e d ( r e t u r n “ 0 ” w h e n r e a d )
C o m p a r e 0 , 1 m o d u l a t i o n m o d e b i t
0 : D i s a b l e d
1 : E n a b l e d
C o m p a r e 2 , 3 m o d u l a t i o n m o d e b i t
0 : D i s a b l e d
1 : E n a b l e d
Frequency
divider
Frequency
T i m e r A , B m o d e r e g i s t e r
( T A B M : a d d r e s s 0 0 1 D
1/128
1/256
1/128
1/256
1/16
1/32
1/64
1/16
1/32
1/64
divider
0 : W r i t e t o l a t c h a n d t i m e r s i m u l t a n e o u s l y
1 : W r i t e t o o n l y l a t c h
0 : C o u n t s t a r t
1 : C o u n t s t o p
0 : W r i t e t o l a t c h a n d t i m e r s i m u l t a n e o u s l y
1 : W r i t e t o o n l y l a t c h
0 : C o u n t s t a r t
1 : C o u n t s t o p
1/2
1/2
selection bits
Timer A
count source
selection bits
Page 35 of 117
1 6
Timer B count
Timer A count
, i n i t i a l v a l u e : 0 0
stop bit
stop bit
1 6
)
Timer B (low-order) latch (8)
Timer A (low-order) latch (8)
Timer B (low-order) (8)
Timer A (low-order) (8)
Fig. 33 Timer count source set register
Notes 1: f(X
b7
2: On-chip oscillator can be used when the on-chip oscillator
Data bus
Data bus
a ceramic resonator or on-chip oscillator.
Do not use it at RC oscillation.
is enabled by bit 3 of CPUM.
IN
) can be used as timer X count source when using
Timer A (high-order) latch (8)
Timer B (high-order) latch (8)
Timer A (high-order) (8)
Timer B (high-order) (8)
b0
Timer count source set register
(TCSS : address 002A
Timer A count source selection bits
Timer B count source selection bits
Timer X count source selection bits
b4 b3 b2
b1 b0
0
0
1
1
b7 b6 b5
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0 : f(X
1 : f(X
0 : f(X
1 : Not available
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0 : f(X
1 : f(X
0 : f(X
1 : f(X
0 : f(X
1 : f(X
0 : On-chip oscillator output (Note 2)
1 : Not available
0 : f(X
1 : f(X
0 : f(X
1 : f(X
0 : f(X
1 : f(X
0 : Timer A underflow
1 : Not available
IN
IN
IN
)/16
)/2
) (Note 1)
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
)/16
)/2
)/32
)/64
)/128
)/256
)/16
)/2
)/32
)/64
)/128
)/256
16
, initial value: 00
Timer A write
control bit
Timer A interrupt
request
Timer B write
control bit
Timer B interrupt
request
Compare
Capture
Compare
Capture
16
)