IBM EM78M611E 사용자 설명서
EM78M611E
Universal Serial Bus Series Microcontroller
Product Specification
(V1.11) 04.20.2007
•••• 17
(This specification is subject to change without further notice)
8.2.3.2 CONT (Control Register) Default Value: (0B_0011_1111)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
LED
INT
TSR2
TSR1
TSR0
PSR2
PSR1
PSR0
Except for Bit 6 (Interrupt enable control bit), the CONT register can be read by the
instruction "CONTR" and written by the instruction “CONTW".
instruction "CONTR" and written by the instruction “CONTW".
CONT [0~2] Watchdog Timer prescaler bits. These three bits are used as the
Watchdog Timer prescaler.
CONT [3~5] TCC Timer prescaler bits.
The relationship between the prescaler value and these bits are shown below:
PSR2/TSR2
PSR1/TSR1
PSR0/TSR0
TCC Rate
WDT Rate
0
0
0
1: 2
1: 1
0
0
1
1: 4
1: 2
0
1
0
1: 8
1: 4
0
1
1
1: 16
1: 8
1
0
0
1: 32
1: 16
1
0
1
1: 64
1: 32
1
1
0
1: 128
1: 64
1
1
1
1: 256
1: 128
NOTE
WDT Timing base is “Power-on time”. Set by the code option [2, 1.]
Ex. Code option [2 ,1] = 01 (2ms), and Prescaler = 1:128.
Ex. Code option [2 ,1] = 01 (2ms), and Prescaler = 1:128.
WDT overflow time is: 2mS * 2^7 = 256 mS
CONT [6] Interrupt enable control bit. This bit toggles Interrupt function between
enable and disable. It is set to 1 by the interrupt disable instruction "DISI"
and reset by the interrupt enable instructions "ENI" or "RETI."
and reset by the interrupt enable instructions "ENI" or "RETI."
0
: Disable the Interrupt function
1
: Enable the Interrupt function
CONT [7] LED bit. This bit is used to enable the LED sink capacity of P76 and P77.
0
: Disable the LED sink capacity of P76, P77
1
: Enable the LED sink capacity of P76, P77