COP8AME9_14 Datasheet, PDF (23/102 Pages) Texas Instruments – COP8AME9 8-Bit CMOS Flash Microcontroller with 8k Memory, Dual Op Amps, Virtual EEPROM, Temperature Sensor, 10-Bit A/D and Brownout Reset

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COP8AME9, COP8ANE9
SNOS930F – MARCH 2001 – REVISED MARCH 2013
Figure 12. High-Speed Crystal Oscillator
Figure 13. Low Speed Crystal Oscillator
CONTROL REGISTERS
CNTRL Register (Address X′00EE)
T1C3
T1C2
T1C1
T1C0
MSEL
IEDG
SL1
Bit 7
SL0
Bit 0
The Timer1 (T1) and MICROWIRE/PLUS control register contains the following bits:
T1C3 Timer T1 mode control bit
T1C2 Timer T1 mode control bit
T1C1 Timer T1 mode control bit
T1C0 Timer T1 Start/Stop control in timer modes 1 and 2. T1 Underflow Interrupt Pending Flag in timer mode
3
MSEL Selects G5 and G4 as MICROWIRE/PLUS signals SK and SO respectively
IEDG External interrupt edge polarity select (0 = Rising edge, 1 = Falling edge)
SL1 & SL0 Select the MICROWIRE/PLUS clock divide by (00 = 2, 01 = 4, 1x = 8)
PSW Register (Address X′00EF)
HC
C
Bit 7
T1PNDA
T1ENA
EXPND
BUSY
EXEN
GIE
Bit 0
The PSW register contains the following select bits:
HC Half Carry Flag
C Carry Flag
T1PNDA Timer T1 Interrupt Pending Flag (Autoreload RA in mode 1, T1 Underflow in Mode 2, T1A capture
edge in mode 3)
T1ENA Timer T1 Interrupt Enable for Timer Underflow or T1A Input capture edge
EXPND External interrupt pending
BUSY MICROWIRE/PLUS busy shifting flag
EXEN Enable external interrupt
GIE Global interrupt enable (enables interrupts)
The Half-Carry flag is also affected by all the instructions that affect the Carry flag. The SC (Set Carry) and R/C
(Reset Carry) instructions will respectively set or clear both the carry flags. In addition to the SC and R/C
instructions, ADC, SUBC, RRC and RLC instructions affect the Carry and Half Carry flags.
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