Z51F6412
Product Specification
PS030302-0212
P R E L I M I N A R Y
62
11.2 BIT
11.2.1 Overview
The Z51F6412 MCU features one 8-bit Basic Interval Timer that is free-run and can’t stop. Block
diagram is shown in Figure 11-2. In addition, the Basic Interval Timer generates the time base for
watchdog timer counting. It also provides a Basic interval timer interrupt (BITF).
The Z51F6412 MCU features these Basic Interval Timer (BIT) features:
- During Power On, BIT gives a stable clock generation time
- On exiting Stop mode, BIT gives a stable clock generation time
- As clock function, time interrupt occurrence
11.2.2 Block Diagram
11.2.3 Register Map
Table 11-3 Register Map
Name
Address
Dir
Default
Description
BCCR
8BH
R/W
05H
BIT Clock Control Register
BITR
8CH
R
00H
Basic Interval Timer Register
Figure 11-2 BIT Block Diagram
RING-OSC
(1MHz)
BITR (8-bit COUNT)
BIT_CLK
÷ 8
BIT Interrupt Generator
BIT Out Generator
BIT Interrupt Flag
BIT_OUT (WDT clock source)
BIT_CLK
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20
BITR
BIT_Int_Flag
BIT_Out
÷ 32
1MHz ÷ 8 ÷ 32 3.91KHz
BCK[2:0] = 001b