NEC mPD780024AS Series, Preliminary User'S Manual

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105
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 0
Preliminary User’s Manual U16035EJ1V0UM
6.2 Configuration of 16-Bit Timer/Event Counter 0
16-bit timer/event counter 0 consists of the following hardware.
Table 6-1. Configuration of 16-Bit Timer/Event Counter 0
Item Configuration
Timer/counter 16 bits
×
1 (TM0)
Register 16-bit timer capture/compare register: 16 bits
×
2 (CR00, CR01)
Timer output 1 (TO0)
Control registers 16-bit timer mode control register 0 (TMC0)
Capture/compare control register 0 (CRC0)
16-bit timer output control register 0 (TOC0)
Prescaler mode register 0 (PRM0)
Port mode register 7 (PM7)
Note
Note See Figure 4-11 Block Diagram of P70 to P73 and Figure 4-12 Block
Diagram of P74 and P75.
Figure 6-1 shows a block diagram.
Figure 6-1. Block Diagram of 16-Bit Timer/Event Counter 0
Internal bus
Capture/compare control
register 0 (CRC0)
TI01/P71
f
X
f
X
/2
2
f
X
/2
6
f
X
/2
3
TI00/TO0/P70
Prescaler mode
register 0 (PRM0)
2
PRM01PRM00
CRC02
16-bit timer capture/compare
register 01 (CR01)
Match
Match
16-bit timer counter 0
(TM0)
Clear
Noise
elimi-
nator
CRC02 CRC01 CRC00
INTTM00
TO0/TI00/
P70
INTTM01
16-bit timer output
control register 0
(TOC0)
16-bit timer mode
control register 0
(TMC0)
Internal bus
TMC03 TMC02 TMC01 OVF0 TOC04 LVS0 LVR0 TOC01 TOE0
Selector
16-bit timer capture/compare
register 00 (CR00)
Selector
Selector
Selector
Noise
elimi-
nator
Noise
elimi-
nator
Output
controller